Researchers discover about the genetic mutation causing lactase persistence is that they are located next to the lactase gene in a non-coding regulatory region (a "switch").
The lactase enzyme's continuous activity as an adult is known as lactase persistence.
The LCT gene provides instructions for making an enzyme called lactase. This enzyme helps to digest lactose, a sugar found in milk and other dairy products.
Since lactase's sole purpose is to digest lactose in milk, most mammal species see a significant decline in the enzyme's activity after weaning.
The genetic selection of those who can digest lactose results in the lactase persistence trait, which is more prevalent in populations that keep cattle and raise dairy products.
Hence, researchers discover about the genetic mutation causing lactase persistence is that they are located next to the lactase gene in a non-coding regulatory region (a "switch").
Learn more about lactase persistence here https://brainly.com/question/3465475
#SPJ4
It is confusing that genes and proteins are given the same name, such as epas1. let’s sort them out with the basics. a gene is a section of what type of molecule?
It is confusing that genes and proteins are given the same name, such as epas1. A gene is a section of DNA or deoxyribonucleic acid.
A gene is the basic structural and functional unit of heredity. Genes contain instructions which directs the cells to synthesize molecules called proteins. Proteins perform various functions in the body required for maintenance of health of an individual.
The EPAS1 gene, also called as HIF2A , delivers instructions for the synthesis of a protein known as hypoxia-inducible factor 2-alpha (HIF-2α). This protein is a part or subunit of a larger protein complex called HIF, which plays a crucial role in the body's capacity to adjust to dynamic oxygen levels.
To learn more about DNA here
https://brainly.com/question/264225
#SPJ4
B
What is a scientific explanation
for a set of observations that can
be tested and is written with an
"if/then" statement?
a theory
a hypothesis
A scientific explanation for a set of observations that can be tested and is written with an "if/then" statement is referred to as hypothesis and is denoted as option B.
What is Hypothesis?This is defined as the proposed explanation for a particular phenomenon before several experiments are conducted by others in different parts of the world to confirm its authenticity.
It employs the use of words such as "if/then" which shows its unproven status which is therefore the reason why it was chosen as the most appropriate choice.
Read more about Hypothesis here https://brainly.com/question/606806
#SPJ1
A family has seven sons. The chance that there eighth child will be a daughter is
Answer:
One chance in two
Explanation:
A parent can only have one or the other meaning a son or daughter. Both the son and the daughter represent one half of a probability of having each one separately. On whether or not the parent will have a daughter as the eighth child, is completely irrelevant as a parent can only bare a son and daughter. This would mean they would have a one chance in two for either cases, but due to the context of the question, it would be for the daughter. So therefore, they would have one chance in two.
Thank you,
Eddie
The non-oxidative stage of the pentose phosphate pathway produces substances that are intermediates of?
The non-oxidative stage of the pentose phosphate pathway produces substances that are intermediates of glycolysis.
What is glycolysis?Glycolysis is the method of dividing glucose to produce energy. It generates two pyruvate particles, ATP, NADH, and water.
The process occurs in a cell's cytoplasm and therefore does not entail oxygen. It can be found in aerobic and anaerobic organisms.
Since it is utilized by nearly all organisms on Earth, it was most likely one of the first metabolic pathways to evolve.
The non-oxidative phase of the pentose phosphate pathway generates glycolysis adducts.
Thus, the answer is glycolysis.
For more details regarding glycolysis, visit:
https://brainly.com/question/15159050
#SPJ4
An increase in carbon dioxide in the atmosphere will MOST likely affect which type earth activity?
An increase in carbon dioxide in the atmosphere will most likely affect a type earth activity called cave formation.
How do cave form?The carbon dioxide (CO2) in the earth atmosphere is increasing as a result of the anthropogenic activities such as deforestation, burning of the fossil fuels.
Carbon dioxide is known to be a greenhouse gas that is released by living organisms as a waste product of cellular respiration.
The carbon dioxide in the atmosphere gets mixed with the rain water which seeps into the soil. This results in the accumulation of carbonates (CO3²-) in the soil as limestone.
The cave of limestone is formed by the groundwater because limestone is a soft material which get easily dissolves in the water.
Learn more about cave formation at: https://brainly.com/question/11862452
#SPJ1
In the electron transport chain, protons are pumped from where to where in the mitochondria of eukaryotic cells?
In the electron transport chain, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.
The energy derived from the transfer of electrons through the electron transport chain is used to pump protons, as a result, an electrochemical gradient is generated, consisting of a proton gradient and a membrane potential.
The energy created by the formation of this gradient is then harnessed to form ATP as the protons travel down their gradient into the matrix through the ATP synthase channel.
The electron transport and ATP production occur simultaneously and are tightly coupled.
To learn more about electron transport chain(ETC), here
brainly.com/question/12940101
#SPJ4
Suppose you cup your hands to hold some water. This action would most likely involve?
Answer:
it involves the adduction of fingers
Assume that a man who is a carrier for a genetic disorder marries a woman who is also a carrier for the same disorder. They have two sons and a daughter. One of their sons is normal, the other son is a carrier, and the daughter shows the genetic disorder. Which of the following pedigree charts correctly represents this inheritance?
Answer:
asdd wa
Explanation:
d asdawd22
A point mutation that does not result in a change to the amino acid coded for is said to be a _______ mutation. a. spontaneous c. selective b. synonymous d. stabilizing
A point mutation that does not result in a change to the amino acid coded for is said to be a synonymous mutation.
What is synonymous mutation?
A synonymous mutation is a change in a protein's amino acid sequence that occurs in the DNA sequence that codes for that amino acid but does not affect the encoded amino acid. These alterations typically take place in the third position of a codon because of the genetic code's redundancy (several codons encode the same amino acid).
For instance, the codes for glycine are GGT, GGA, GGC, and GGG. The identical amino acid will be integrated into the protein sequence with any modification in the codon's third position (for example, A is replaced by G).
Learn more about synonymous mutation here:
https://brainly.com/question/6133117
#SPJ4
it is difficult for blood to clot in wound artery than in wounded vein
Explanation:
because the pressure exerted by artery is more than that of vein due to its narrow lumen and thick walls...causing it difficult to clot.
A researcher has sequenced a gene that is present in two alleles. She has a mixture of both alleles and clones them into e. Coli using plasmids that contain the lacz gene. She is interested in one particular allele that is indicated in a disease. Using media containing x-gal, how can she select those colonies that have her allele of interest?.
She will need to sequence the plasmids of the white colonies before she can determine which allele it carries.
What are plasmids?A plasmid is a single-celled, circular, double-stranded DNA molecule that differs from chromosomal DNA.Plasmids are naturally prevalent in bacterial and eukaryotic cells. Plasmid genes usually provide bacteria with genetic benefits such as antibiotic resistance.RNA plasmids are uncommon, and the vast majority of them are unknown.Examples include plants, fungi, and even animals. Some strains of the yeast Saccharomyces cerevisiae contain linear RNA plasmids.Similar RNA plasmids have been identified in the mitochondria of different varieties of maize plants.Read more about plasmids here:
brainly.com/question/2088910
#SPJ4
When stomata are open and a plant is transpiring normally, how does water move from the soil into the root xylem? select all that apply.
When stomata are open and a plant is transpiring normally, movement of water from the soil into the root xylem is brought about by:-
Pressure generated by roots which pumps water upwards in the plant. Without any additional work done on the fluid by the plant.Evaporation from the leaves in the form of transpiration.In 1895, the Irish plant physiologists H. H. Dixon and J. Joly suggested that water is pulled up the plant by tension or negative pressure from above.
As water is continually being lost from the leaves through transpiration, Dixon and Joly concluded that the loss of water in the leaves exerts a pull on the water in the xylem ducts and draws more water into the leaf.
To learn more about transpiration here
https://brainly.com/question/13891305
#SPJ4
Aerobic respiration creates lactic acid as a by prodcut but prodcues far more atp than respiration.
a. true
b. false
False, aerobic respiration creates lactic acid as a by product but produces far more ATP than respiration. When lactic acid is ferment by certain bacteria which includes the bacteria in yogurt and also by human muscles cells when they are worked hard and fast.
In aerobic cell respiration which includes glycolysis + the kerbers cycle = respiratory electron transport that produce 36 ATP /glucose consumed. Aerobic respiration cell are 18 times more efficient than anaerobic cell respiration because in aerobic respiration more ATP than anaerobic respiration due to the complete oxidation of glucose to CO2 and water .
Now O2 acts as terminal electron accept in this electron transport chain and gets reduced to water.ATP are produced by oxidation phosphorylation in the electron transport chain.
To learn more about aerobic respiration here
https://brainly.com/question/12605249
#SPJ4
In drosophila development, pattern development in the late embryo, larva, and adult is controlled by?
In drosophila development, pattern development in the late embryo, larva, and adult is controlled by homeotic type of gene.
In Drosophila, development is controlled by homeotic type of gene. The beginning phases of development are controlled by homeotic genes. The general body plan of Drosophila is the same in the embryo, the larva, and the adult, each of which has a distinct head end and a distinct tail end, between which are repeating segmental units .
Three of these segments form the thorax, while another eight segments form the abdomen. Two different sets of genes control embryonic development in Drosophila maternal-effect genes and zygotic genes.
To learn more about homeotic type of gene ,here
https://brainly.com/question/28042306
#SPJ4
Abrupt genetic changes that quickly lead to the reproductive isolation of a group of individuals will likely lead to ______________.
Abrupt genetic changes that quickly lead to the reproduction isolation of a group of individual will likely lead to allopatric speciation.
Speciation which involves reproductive isolation of groups within the original population and accumulation of genetic difference for two groups. The sudden change in the genetics which breeds true in a species is represented as mutation.
Mutation is sudden or discountinous changes in genotypes and phenotype of an organism due to change in chromosomes and genes.The sudden change became heritable which means transmitted to the offspring. Mutation can change by environmental factors known as mutagens. Change in one or more nucleotide of DNA.
To learn more about Mutation here
https://brainly.com/question/13923224
#SPJ4
Since the sympathetic division travels through t1– l2, how are the organs of the head supplied with sympathetic innervation?
The organs of the head supplied with sympathetic innervation through the preganglionic neurons of the SANS originate in the thoracic and lumbar (T1 to L2) areas of the spinal cord, with the cell bodies dispersed in four symmetrically and bilaterally distributed regions of the grey matter.
Sympathetic innervation in some cranial nerves' distal branches do not travel from the brain or brain stem. Only in the thoracolumbar area of the spinal cord do sympathetic nerve impulses exit the brain. An element of the autonomic nervous system is the sympathetic nervous system. It is automatic and works with the parasympathetic nervous system to keep the body in equilibrium.
To learn more about sympathetic innervation click here
brainly.com/question/8792332
#SPJ4
What is one benefit if using SI units
ANSWER: the comparison of data all over the world can be done quickly
The surgical removal of the membrane that lines the interior of a joint is known as a?
The surgical removal of the membrane that lines the interior of a joint is known as Joint Synovectomy.
The surgical removal of the synovial membrane, the tissue that lines the joint capsule, is known as a joint synovectomy.
The body's synovium surrounds the joints and creates synovial fluid to lubricate the joint and promote easy mobility.
The joint disease causes the synovium to inflame (synovitis) and overproduce synovial fluid, which contains an enzyme that can eat away at the cartilage on the joint surface, causing bone-on-bone on bone joint discomfort.
When you have a painful, disabling joint issue that does not improve with non-surgical treatments including rest, drugs (NSAIDs) or corticosteroid injections, and physical therapy, your surgeon will typically advise joint synovectomy.
Hence, the surgical removal of the membrane that lines the interior of a joint is known as Joint Synovectomy.
Learn more about Joint diseases here https://brainly.com/question/9639571
#SPJ4
All the wavelengths of light are collectively called the ___________________________ spectrum
The "electromagnetic spectrum" is a term used to describe all light wavelengths.
What is the electromagnetic spectrum?
Scientists refer to the complete range of visible light as the "electromagnetic spectrum". In reality, the majority of the lights in the cosmos are hidden from our view, ranging from radio frequencies to gamma radiation. An alternating magnetic and electric field forms the wave of light.The whole "electromagnetic spectrum" is used by NASA's scientific equipment to examine Planet, the entire universe, and the cosmos beyond. Electromagnetic energy is used when you tune the transmitter, watch Television, and transmit a message.What are the "electromagnetic spectrum's" wavelengths?
The term "electromagnetic spectrum" (EMS) refers to the whole spectrum of radiation that is now understood. Wavelengths rise from around 10⁻¹⁸ meters to 100 km, while frequencies fall from 3 x 10²⁶Hz to 3 x 10³ Hz in this range.
Learn more about electromagnetic spectrum here:
https://brainly.com/question/23727978
#SPJ1
A trait such as eye color, which shows extensive variation within a population is the result of __________ .
Answer:
probably natural selection but it could also be discontinous variation.
Explanation:
depends on what context is??
In primary succession, do biotic or abiot elements arrive first? use examples when explaning your response
Biotic components arrive first in primary succession.
What is ecological succession?Ecological succession is the gradual change in the composition of an ecosystem over a particular time.
Ecological succession can either be;
Primary successionSecondary successionPrimary succession occurs when newly formed rock is preoccupied by living organisms called pioneers for the first time.
On the other hand, secondary succession occurs when an area that was previously occupied by living organisms is disturbed and then reoccupied after the disturbance.
This suggests that the first component of an ecosystem to occupy the substrate during primary succession is biotic components like lichen, grasses etc.
Learn more about primary succession at: https://brainly.com/question/26675203
#SPJ1
Enteric bacteria most useful in the routine monitoring of microbial pollution are gram-negative rods called?
E-coli bacteria which most useful in the routine monitoring of microbial pollution are gram negative rods and this is common indicator organism of water contamination.
It is important to identify enteric bacteria which is one of the major causes of diarrhea disease is bacteria and that detection of pathogenic bacteria is a global key to the prevention and identification of food borne diseases and enteric infections like diarrhea.
The extent of water contamination can be measured using these indicator organisms. This fecal coli-form group has been used as the most common indicator of general wastewater contamination because they are abundant and easy to identify.
To learn more about E-coli bacteria here
https://brainly.com/question/18722309
#SPJ4
Which part of the body is represented by the largest area of the primary motor cortex?
Arm and hand motor area is the largest, and occupies the part of precentral gyrus represented by the largest area of the primary motor cortex .
The primary motor cortex is located in the precentral gyrus the premotor area is more rostral. The pyramidal cells of cortical layer V (also called Betz cells) are the upper motor neurons of the primary motor cortex.
The primary motor cortex, or M1, is one of the principal brain areas involved in motor function. M1 is located in the frontal lobe of the brain, along a bump called the precentral gyrus .
To learn more about primary motor cortex , here
https://brainly.com/question/4843927
#SPJ4
If a cell is placed in an isotonic medium, there will be no net movement of water. True or false?.
It is true.
What is isotonic medium?A solution that has the same amount of salt as cells and blood. In hospitalized patients, isotonic solutions are routinely utilized as intravenous fluids. When a cell is immersed in an isotonic solution, there is no net movement of water into or out of the cell, and the volume of the cell remains constant. Isotonic solutions include 0.9% normal saline and lactated ringers. A hypertonic solution is one that has a greater solute concentration than the solution across the semi-permeable barrier.The isotonic solution allows the cells to move water and nutrients in and out of the cells. This is necessary for the blood cells to perform their function of supplying oxygen and other nutrients to other parts of the body.To learn more about isotonic solutions from the given link
https://brainly.com/question/19464686
#SPJ4
__medium distinguishes different types of microorganisms based on an observable change in the colonies or in the medium.
A differential medium is a type of media that distinguishes different types of microorganisms based on an observable change in the media.
What is a differential medium?A differential medium is any medium for bacterial growth that contains selective agents used to discriminate between different microorganisms present in such medium.
A differential medium can be, for example, a blood agar medium that has bovine blood cells which is selective to Streptococcus bacteria.
In conclusion, a differential medium is a type of media that distinguishes different types of microorganisms based on an observable change in the media.
Learn more about differential media here:
https://brainly.com/question/12944497
#SPJ1
In which zone would you expect to find the greatest abundance of marine organisms? middle intertidal zone supralittoral zone high littoral zone low intertidal zone
High littoral zone has greatest abundance of marine organisms.
What is High littoral zone?The intertidal zone, also known as the "littoral zone," refers to the seashore that is covered during high tide and exposed during low tide, revealing a unique biome that survives under such fluctuating conditions.
Where are most marine organisms found?The majority of ocean life can be found in coastal habitats on the continental shelf, despite the fact that this area accounts for only 7% of total ocean area. The majority of open ocean habitats are found in the deep ocean beyond the continental shelf. Species that live in the oceans and on the coasts can help to create new habitats.
To learn more about Marine life from the given link
https://brainly.com/question/2498427
#SPJ4
n a jungle habitat, there lives a species of snake, called Species A. The carrying capacity of the jungle allows 5000 of Species A. After their habitat was destroyed, a second species of snakes, Species B, arrives in the jungle. After a few years, the population of Species A has dropped to 0, and the population of Species B has become 5000. What can you determine from this data?
A. They occupy separate niches, but are still competing for some resources.
B. They occupy completely different niches and are not competing.
C. You cannot determine anything from this data.
D. They occupy the same niche and are competing fully for all resources.
Reset Selection
Based on the carrying capacity of the habitat and the changes that occurred in number of the two snake species, correct option is They occupy the same niche and are competing fully for all resources; option D
What is carrying capacity of a habitat?The carrying capacity of a habitat is the maximum number of species the available resources in that habitat can sustain.
The data given of the species of snakes, Species A and Species B, indicate that they are both present in the habitat after a change occurs in the habitat.
Since the population of Species A became zero after Species B was introduced in the habitat, they occupy the same niche and are competing fully for all resources.
In conclusion, the competition between the species of snakes is responsible for the decline in Species A.
Learn more about carrying capacity at: https://brainly.com/question/23656166
#SPJ1
New techniques to produce cells with the characteristics of embryonic stem cells include?
New techniques to produce cells with the characteristics of embryonic stem cells include Parthenogenesis, retroviral transduction of transcription factor genes into adult skin cells (iPS), and somatic cell nuclear transfer (SCNT).
What is embryonic stem cells?Pluripotent stem cells called embryonic stem cells are produced from the inner cell mass of a blastocyst, a preimplantation embryo in its early stages. Four to five days after fertilization, human embryos reach the blastocyst stage, consisting of 50 to 150 cells.Embryonic stem cells (ESCs) are stem cells that come from an embryo's core mass of undifferentiated cells.In laboratories, typically fertility clinics, 4- to 6-day-old embryos are used to produce human embryonic stem cells. The core embryonic cells are taken out and put in a dish with the nutrients they require to thrive.Theoretically, embryonic stem cells are capable of mass-producing any kind of tissue. These cells are used by researchers to investigate disease and development in the hopes of developing therapies. A single embryo's two or three dozen cells can produce millions of embryonic stem cells in about six months.Learn more about embryonic stem cell here:
https://brainly.com/question/18243320
#SPJ4
short term effect if a wild beast migration occurred in savanna grassland
The short-term effect if a migration of wild animals took place in savanna grasslands is higher mortality of adults of migrating species than of resident species.
Why do animals migrate?Several species of birds, mammals, insects and fish migrate from one place to another in search of favorable reproductive and environmental conditions.
Why do animals migrate in Africa?Almost two million animals move across the Serengeti and Mara plains in search of food and water. Facing multiple dangers such as land predators and crocodiles the wildebeest complete an 800 km round trip during the migration.
With this information, we can conclude that The Great Wildebeest Migration is the largest animal migration in the world. Every year, more than 2 million animals (wildebeest, zebra, and gazelle) migrate in a clockwise direction across the ecosystems of the Serengeti (Tanzania) and the Masai Mara (Kenya).
Learn more about animal migration in brainly.com/question/15410433
#SPJ1
Which structure(s) coordinates daily cycles of activity that are linked to the day-night cycle??
A structure that coordinates daily cycles of activity that are linked to the day-night cycle is suprachiasmatic nucleus (SCN).
The anterior region of the hypothalamus has a bilateral structure called the suprachiasmatic nucleus (SCN). It controls the majority of the body's circadian rhythms and serves as the circadian timing system's main pacemaker.
The SCN gets suggestions from Intrinsically photosensitive retinal ganglion cells (ipRGCs) project through the retino-thalamic tract to neurons in the SCN via glutamatergic synapses, providing the photic input. The circadian clock is synchronised as a result.
Therefore, A structure that coordinates daily cycles of activity that are linked to the day-night cycle is suprachiasmatic nucleus (SCN).
Learn more about SCN here;
https://brainly.com/question/14755066
#SPJ4
