A trait whose development requires the action of thousands of genes but whose variation is due to variation atonly two loci is?
a.Extranuclear
b.Digenic
c.Polygenic
d.Meristic

Biceps brachii acts primarily as an elbow flexor, and secondarily as a supinator. It is able to supinate when the elbow is flexed. When the elbow is fully extended, supinator performs the action.

The musculocutaneous nerve innervates this muscle. The long head arises from the supraglenoid tubercle of the scapula, and the short head arises from the coracoid process. The tendon of the muscle inserts onto the radial tuberosity. The muscle also expands out as the bicipital aponeurosis, which attaches to the shaft of the ulna. Biceps brachii acts primarily as an elbow flexor, and secondarily as a supinator. It is able to supinate when the elbow is flexed. When the elbow is fully extended, supinator performs the action. This muscle is innervated by the radial nerve. It arises from the lateral supracondylar ridge and lateral intermuscular septum of the arm. The muscle inserts onto the radial tuberosity. As the muscle crosses the elbow joint, anterior to the joint line, it acts as an elbow flexor, and a semi-pronator of the forearm.

Learn more about supinator here:

https://brainly.com/question/28791779

#SPJ4

The benefit of being both autotrophic and heterotrophic is the increased flexibility in obtaining nutrients.

Autotrophic organisms are able to produce their own organic compounds using energy from sunlight or inorganic chemical reactions, while heterotrophic organisms obtain their organic compounds by consuming other organisms.

By being both autotrophic and heterotrophic, mixotrophic organisms can switch between different modes of nutrition depending on the availability of resources. This can be especially beneficial in environments where resources are limited or unpredictable.

Find out more on autotrophic organisms at https://brainly.com/question/14422045

#SPJ1

The flow rate of blood through a capillary in cubic centimeters per second, is 37.68 x 10⁻¹⁰ cm³/sec.

Flow rate (Q) of anything is defined as the rate of volume of the liquid of something passing through a cross-section of area with respect to time. The SI unit of of flow is m³/sec. The relation between the velocity of the liquid and the rate of flow is directly proportional and can be calculated using the following equation :

⇒ Q = A x v    where, A is the cross sectional area and v is the average velocity of the liquid. First We have to calculate the area of the cross section :

⇒Area = [tex]\pi[/tex]r²

⇒3.14 x (2.0 x 10⁻⁴) x (2.0 x 10⁻⁴)

⇒ 12.56 x 10⁻⁸ cm²

Now, calculating flow rate, Putting the given values :

⇒  Q = (3.0 x 10⁻²) x (12.56 x 10⁻⁸)

⇒ 37.68 x 10⁻¹⁰ cm³/sec

Learn more about Blood flow rate here,

https://brainly.com/question/14546593

#SPJ4

Is it true because cartilage is a type of connective tissue that has a flexible matrix composed of collagen fibers, proteoglycans, and water.

This flexible matrix allows cartilage to withstand mechanical stress and provides a supportive and cushioning function in joints, the nose, the ears, and other parts of the body. Unlike most other connective tissues, cartilage is avascular and does not have direct blood supply. Therefore, it has a limited capacity for self-repair and regeneration.

However, chondrocytes, the only cell type found in cartilage, can undergo mitosis and produce new cartilage matrix. This makes cartilage an excellent tissue for use as a scaffold for bone formation, as it can be replaced by bone through the process of endochondral ossification.

To know more about cartilage here

https://brainly.com/question/15455830

#SPJ4

The four main physical and chemical factors limiting the growth of bacteria in nature are warmth, moisture, pH levels, and oxygen levels.

The two main general problems in most structures are warmth and wetness. Moisture has a major role in the development of fungus. Like all living things, bacteria require water to survive. Without a reliable water source nearby, they are unable to grow and spread. The likelihood of moisture and standing water in bathrooms and basements makes them prime locations for possible microbial problems. In addition to damaging equipment, leaks in the ceiling caused by rain or from neglected water system pipes can serve as breeding grounds for bacteria in harder-to-see regions.

To know more about bacteria click here:

brainly.com/question/8008968

#SPJ4

A complete definition of body image includes how intelligent one believes him or herself to be. False. Body image can affect a person's health. True. People with an eating disorders can seek professional help to overcome their disorder or can wait until the disorder goes away on its own..

[tex] - [/tex]

Answer: The answer is

F aka false.

Explanation:

By titrating with a stock solutions of the complexing agent ethylene diamine tetra acetic acids (EDTA), hardness of water is ascertained.

As EDTA is water insoluble, this experiment will use the disodium salt for EDTA. With a metal ion, EDTA can create 4 or 6 coordination connections. Introduction T7A Total Hard, a preprogrammed method, is used to calculate the total hardness of water. Ammonia buffer is applied to a sample to get the pH level to 10.0 before calculating total hardness. The ethylenediaminetetraacetic acids (EDTA) titrant is then used to titrate the sample to the equivalency point. By titrating with a stock solutions of the complexing agent ethylene diamine tetra acetic acids (EDTA), hardness of water is ascertained. In terms of calcium carbonate, hardness is measured in milligrammes per litre (mg/L) / grains per gallon (gpg). The formula for calculating hardness is hardness = 2.497 (Ca) + 4.118. (Mg).

Learn more about water

https://brainly.com/question/6870886

#SPJ4

Transcription, the act of creating a complementary RNA (cRNA) copy of a DNA sequence, is the first step in the production of proteins.

The messenger RNA (mRNA) molecule is produced when the enzyme RNA polymerase attaches to the promoter region of a gene during transcription. Afterward, the mRNA molecule is moved from the nucleus and into the cell's cytoplasm, where it may be translated into a useful protein.

Decoding the mRNA into a string of amino acids that makes up a protein is known as translation. The transfer RNAs (tRNAs) are used by the ribosome to carry the relevant amino acids to the ribosome during translation after reading the mRNA codons.

The ribosome then connects the amino acids in the proper order to make a protein. Then, this protein may carry out its biological tasks. Thus, transcription precedes translation in the production of proteins.

To learn more about Transcription visit:

https://brainly.com/question/29135669

#SPJ4

Answer:

Bb x Bb or BB x BB or bb x bb

Explanation:

B for dominant

b for recessive

When an organism is heterozygous and is crossed, 2 of the offspring out of the 4 will also share the same trait. So, if two of the tall pea plants are crossed, if they are heterozygous 2 of their offspring will also be tall pea plants and if they are homozygous all of their offspring will be tall pea plants.

Cross:

Bb is the tall pea plant if it is heterozygous.

Bb x Bb                                  

      B        b                                                                B       B

B    BB     Bb                 for homozygous :         B    BB    BB

b    Bb      bb                                                       B    BB    BB

2/4 are tall pea plants                                    all are tall pea plants

You could pick either cross, they both will give you the right answer answer:

If you use a heterozygous cross and 2 offspring are tall pea plants (same as the parents) then the trait is heterozygous.

If you use a homozygous cross and all offspring are tall pea plants (same as the parents) then it is homozygous.

Note that if the heterozygous cross doesn't have 2 tall offspring then it is homozygous and similarly if the homozygous crossed offspring does not yield all tall pea plants then the gene is heterozygous.

Answer: mf uhhh

Explanation:

In the Middle Ages, girls generally married in their teens and boys in their early twenties. A teenager is someone between the ages of 13 and 19. 

It was not at all unusual for newly emancipated girls like Susie Baker, or many other girls across the country, to marry at the age of 14 in the mid-19th century.

Nujoud Ali was just an 8-year-old child when her father arranged the marriage.

Girls around 16 years old are friends from childhood. They are also child brides and some got married when they were 10 years old. Marriage for girls under the age of 18 is illegal in India. However, due to patriarchy and poverty, the practice still continues in many parts of the country. 

To learn more about  Marriage visit:

https://brainly.com/question/8188240

#SPJ4

For the purpose of fending off infections and intruders, white blood cells leave the plasma and go into tissues. The ideal choice is d).

Tissues are groups of cells that function as a cohesive block and share a common structure. The body processes give it shape and help to store energy and retain heat. Connective tissue, parenchyma cells, muscle tissue, and nervous tissue are the four different types of tissues.

They indicate a level of order and cell differentiation in living things. The activities of tissues include respiration, digesting, and transportation. Tissues are therefore essential for multicellular organisms.

To know more about Tissues visit :

https://brainly.com/question/17664886

#SPJ4

The Complete Question :

___________ leave the blood and enter tissues to fight off pathogens and invaders.

a. Platelets

b. Capillaries

c. Red blood cells

d. White blood cells

Many of the changes that accompany menopause are caused by the drop in the circulating levels of estrogen. Progesterone and estrogen production both decline concurrently. The majority of menopause symptoms are brought on by the significant decline in estrogen levels.

A woman's menstrual periods end permanently and her ability to become pregnant when she approaches menopause, also known as the climacteric. Menopause can begin at any age, although it frequently occurs between the ages of 45 and 55. When a woman has gone a full year without getting her period, it is commonly said that menopause has started. It could also be defined by a decrease in the hormone production of the ovaries. Women who have had surgery to remove their uterus but still have healthy ovaries are not considered to have experienced menopause. After uterus excision, menopause symptoms typically manifest earlier.

To learn more about menopause click on the given link: brainly.com/question/3256449

#SPJ4

According to the evolutionary biology hypothesis of punctuated equilibrium, also known as punctuated equilibria, once a species first appears in the fossil record, its population will stabilise and show little evolutionary change for the majority of its geological history.

Stasis is the name for this condition of minimal or no morphological change. The theory states that considerable evolutionary change frequently only takes place during rare and geologically quick events of branching speciation, or cladogenesis. Cladogenesis is the process by which a species splits into two separate species as opposed to slow species change. Punctuated equilibrium is sometimes compared to phyletic gradualism, which holds that evolution typically progresses uniformly through the steady, gradual modification of entire lineages (anagenesis).

To learn more about punctuated equilibrium click on the given link: brainly.com/question/12030118

#SPJ4

Option A) Na+ would flow into the cell, and K+ would flow out of the cell, would be the effect of ACh binding to its receptor on a skeletal muscle cell.

According to electron microscopy research, the postsynaptic membrane is a specific structure with a high degree of folding (De Harven and Coers, 1959). Motor nerve terminals are lodged in a gutter or main cleft in the muscle. There are also secondary junctional folds, which are invaginations of the muscular membrane that extend into the sarcoplasm. They enhance the overall surface of the postsynaptic membrane, and AChRs are densely concentrated on the crests of these folds, adjacent to the presynaptic active zones. Voltage-gated Na+ channels are clustered at the folds' bases to enhance postsynaptic membrane excitability.

To learn more about skeletal muscle cell Please click on the given link:

https://brainly.com/question/24655445

#SPJ4

Complete Question is:

What would be the effect of ACh binding to its receptor on the postsynaptic muscle cell?

A.) Ca2+ would leak out of the cell as Na+ flowed into the cell.

B.) Ca2+ would flow into the cell as Na+ flowed out of the cell.

C.) Na+ would flow into the cell and K+ would flow out of the cell.

D.) Only Na+ would flow into the cell.

Organisms that can use only oxygen as a final electron acceptor can generate ATP via during anaerobic conditions.

Anaerobic conditions exist when the intake or disappearance of oxygen exceeds its production through photosynthesis or diffusion through physical transfer from the surrounding environment. Microbial respiration normally consumes oxygen as a result of the availability of organic material.

Soil and muck, the inner guts of certain creatures, and hydrothermal vents deep beneath the sea are all examples of anaerobic environments. These locations are not devoid of life. Yet, the life that survives there is often tiny, single-celled, and tough.

Learn more about  anaerobic conditions

https://brainly.com/question/15301534

#SPJ4

"Sociobiology" is the methodical study of how biology influences human social behavior.

learn more about sociobiology here

https://brainly.com/question/14994030

#SPJ4

An anti-HIV medication called zidovudine lowers the level of the virus in the body. Anti-HIV medications like zidovudine decrease immune system deterioration and stop the development of AIDS-related diseases.

Antiviral medications are a particular class of medication used to treat viral infections. They work by eradicating or stopping the spread of viruses. Oseltamivir and zanamivir, two antiviral medications, are used to treat the flu (Relenza). One of these might have been recommended to you by someone.

The COVID antiviral treatments are really only available to patients at highest risk of contracting serious COVID-19 illness, such as people older than 65 and those who have other medical diseases such as cancer, as well as diabetes that make them more susceptible to severe illness. The first anti - viral, idoxuridine, has been approved in 1963 for applied topically of a herpes simplex virus (HSV).

To know more about Antiviral Drug visit:

https://brainly.com/question/29821745

#SPJ4

Yes, bryophytes do have stomata, but they are less numerous than those seen in vascular plants.

learn more about bryophytes here

https://brainly.com/question/1331358

#SPJ4

Archaea are considered a monophyletic group according to the three-domain hypothesis because this group evolved after the origin of bacteria.

Due to certain characteristics, archaeal cells are distinct from the bacteria and eukaryota in the other two domains. There are numerous recognised phyla that further divide archaea. Since the majority haven't been isolated in a lab and have only been found in environmental samples by their gene sequences, classification is challenging. It is unknown if they are able to produce endospores. The size and shape of bacteria and most archaea are comparable, however some archaea, such the flat, square cells of Haloquadratum walsbyi, exhibit a wide range of shapes. Despite resembling bacteria in form, archaea have more eukaryotic-like genes and metabolic pathways than bacteria do. The transcriptional and translational enzymes are a good example of this.

To learn more about archaea click on the given link: brainly.com/question/1475001

#SPJ4

Sphincters are thickened regions of muscle that function like valves to control the flow of contents at various points in the gi tract.

Sphincters, which resemble ring-shaped muscles, create valves in the digestive system. The gastro-esophageal sphincter, also known as the cardiac sphincter, is situated at the oesophagus' stomach end. This sphincter opens in reaction to swallowing and the pressure put on it by the food bolus, allowing the bolus to enter the stomach. Those in the gastrointestinal (GI) tract assist in controlling the passage of bile and digestive enzymes into the intestines as well as the movement of food from the oesophagus to the anus. This sphincter closes when there is no swallowing motion, preventing stomach contents from ascending the oesophagus. Acid reflux, sometimes known as "heartburn," happens when the digestive system's acidic contents leak into the oesophagus.

To know more about cardiac sphincter click here:

brainly.com/question/2924573

#SPJ4

According to the question, when that RNA leaves the nucleus and becomes involved in translation:

it is not necessary that asparagine will appear in the protein.

After being transcribed in the nucleus, the RNA is processed in the cytoplasm before being translated into a protein. Ribosomes commence the translation process by reading codons, or three-nucleotide sequences, and attaching the matching amino acid to the developing protein chain. The codon AAC only codes for asparagine when it is surrounded by other codons. If the codon AAC is part of a larger codon sequence that codes for another amino acid, the protein will contain that amino acid rather than asparagine. As a result, the codon AAC can be transcribed in the nucleus and subsequently translated into a protein that lacks asparagine.

For more such questions on codon, click on:

https://brainly.com/question/26929548

#SPJ4

The type of mutation that is more than likely to be dangerous to your genetics is frameshift mutation.

Gametes experience germline mutations. These mutations are particularly important since they can be passed down to kids, who will all have the mutation in every cell.

A frameshift mutation is a genetic change brought on by an insertion or deletion that changes how the DNA sequence is read. A chain of numerous smaller molecules known as nucleotides makes up a DNA sequence.

Therefore, frameshift mutations are the kind of mutation that is most likely to be risky for your genetic makeup.

To learn more about mutation, refer to the link:

https://brainly.com/question/28504442

#SPJ9

98.6° F (37° C). The biological mechanism of thermoregulation maintains a consistent internal body temperature.

The thermoregulation system is composed of the hypothalamus in the brain, sweat glands, the epidermis, and the circulatory system. The average body temperature of a human is 98.6°F (37°C), which is maintained through a number of physical processes.

Examples include contracting or relaxing blood vessels to alter blood flow, shivering to increase body temperature, sweating to lower it, and so on.

If one is unable to regulate their body temperature, they may overheat and have hyperthermia. The converse is also true: If the core temperature falls too low, hypothermia will set in. These illnesses have the capacity to be fatal.

Learn more about thermoregulation system here:

https://brainly.com/question/15276860

#SPJ4

Absolute threshold is the minimum amount of stimulus energy that a person can detect.

The lowest level of a stimulus—light, sound, touch, etc.—that an organism could detect is how an absolute threshold is initially described in neuroscience and psychophysics. Absolute threshold is now understood to be the point at which a stimulus will be detected a specific proportion of the time, often 50%, as a result of the signal detection hypothesis.

The subject's goals and expectations, cognitive processes, and degree of stimulus adaptation are a few examples of the many variables that might affect the absolute threshold. The difference threshold, which measures how distinct two stimuli must be for the subject to perceive that they are different from one another, can be contrasted to the absolute threshold.

To know more about Absolute threshold click here:

https://brainly.com/question/13327021

#SPJ4

Every 4 years they are put together and we add one day to our yearly calendar, with the extra 0. 24 days each year upon the completion of Earth's revolution. Thus, C is the correct option.

Earth revolves in orbit around the sun for 365 days, 6 hours, and 9 minutes concerning the stars, at a speed ranging from 29.29 to 30.29 km/s. The 6 hours, and 9 minutes add up to about an extra day every fourth year, which is designated a leap year, with the extra day added as February 29th.

The Sun and the Moon appear to move from east to west across the sky, whereas the earth rotations on its axis from west to east. Rotation is the spinning of the Earth around its axis. The axis has an angle of 23 1/2º which is perpendicular to the plane of Earth’s orbit. This means the Earth is tilted on its axis, and due to this tilt, the northern and southern hemispheres lean in a direction away from the Sun.

To learn more about earth's revolution,

brainly.com/question/14607848

#SPJ4

The correct question is:

What do we do with the extra 0.24 days each year upon the completion of Earth's revolution?

A. Every year on New Year's Day we get an extra 4 hours added to our day.

B. Nothing is done with them and our yearly calendar always has 365 days.

C. Every 4 years they are put together and we add one day to our yearly calendar.

D. We move our clocks back an hour in the fall and ahead an hour in the spring.

Axons are long, hair-like elongated extension of a neuron that carry messages to other nerve cells.

Neurons generally consist of cell bodies with one or more extensions. There are two types of extensions: Dendrites (short processes with branches) and axons (single processes with different lengths in different cells).

Nerve cells are elongated because their main job is to transmit impulses over long distances. Nerves receive electrical impulses from all over the body, and these impulses must travel uninterrupted pathways to reach the brain

Neurons don't have to burst or collapse to cause this damage. The study found that stretching causes the same cellular damage seen in chronic traumatic encephalopathy (CTE) and Alzheimer's disease. 

To learn more about neurons visit:

https://brainly.com/question/24217914

#SPJ4

One similarity between diffusion and osmosis is that both are passive transport mechanisms, which means they do not require energy input from the cell to move substances across a membrane.

Diffusion is the movement of molecules or ions from an area of high concentration to an area of low concentration, which results in the equalization of concentration throughout a medium. Osmosis is a specific type of diffusion in which water molecules move across a selectively permeable membrane from an area of high water concentration to an area of low water concentration, also known as from a hypotonic solution to a hypertonic solution.

In both cases, the movement of molecules or water occurs spontaneously without the input of energy from the cell. Diffusion and osmosis are fundamental concepts in biology and play important roles in various cellular processes such as nutrient uptake and waste removal.

Learn more about diffusion here:

https://brainly.com/question/20843145

#SPJ4

The epidermis layer of the skin called the lacks blood vessels.

The skin has three layers: The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone.

The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.

The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.

The epidermis is visible to the eye and works to provide protection to the body. It does not contain any blood vessels and is, therefore, dependent on the dermis, the layer of the skin underneath it, to provide access to nutrients and dispose of waste. Hence, the epidermis is the layer of skin that does not contain blood vessels.

Learn more about  epidermis here:

https://brainly.com/question/13450121

#SPJ4