The mechanism of evolution is natural selection. It is more likely that organisms will survive and pass on the genes that contributed to their success if they are better adapted to their environment. The offspring adapts to the environmental changes over a period of time.
The lighter mice had a greater chance of surviving and producing offspring. Normal determination leaned toward the light mice. Over the long run, the populace turned out to be light-hued. Over time, the two kinds of mice may undergo enough changes to become distinct species by the process of natural selection.
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In the genetic cross in between two F1 hybrid pea plants for spherical seeds will yield what percent spherical sedded plants in the f2 generation?
In the genetic cross between two F1 hybrid pea plants for spherical seeds, the F2 generation is expected to yield 75% spherical seeded plants and 25% wrinkled seeded plants.
This is because the F1 generation is heterozygous for the spherical seed trait (Ss), and when crossed, the offspring have a 1:2:1 genotypic ratio of SS:Ss:ss. The SS and Ss genotypes both result in spherical seeds, while the ss genotype results in wrinkled seeds.
Therefore, 3 out of 4 possible genotypes in the F2 generation will produce spherical seeds, resulting in a 75% chance of spherical seeded plants.
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Huntington's Disease, or Huntington's Chorea, is a rare autosomal dominant disease that results in the slow deterioration of the physical and mental abilities of the affected person. Experts estimate that one in every 10,000 people (about 30,000 Americans) suffer from Huntington disease and another 150,000 are at risk for developing it. Many describe the symptoms of HD as having ALS, Parkinson’s and Alzheimer’s – simultaneously.
Symptoms usually appear between the ages of 30 to 50, and worsen over a 10 to 25 year period. Ultimately, the weakened individual succumbs to pneumonia, heart failure or other complications. Every person who inherits the HD gene will eventually develop the disease. Over time, HD affects the individual’s ability to reason, walk and speak. Since the disease does not manifest until a late age, an affected person will often have children already. You can take genetic tests to see if you are at risk for the disease. Use this pedigree to answer the questions about Huntington’s.
1. Using the letters H and h, what is the genotype for each of the following people?
Person 1: _______
Person 2: _______
Person 3: ________
2. Is Huntington’s dominant or recessive? Use evidence from the reading and pedigree to support your answer.
3. Person 3 has a child with someone who does not have Huntington’s. Complete a Punnett Square to determine the chance their offspring will have Huntington’s.
Chance their offspring will have Huntington’s=
1. Using the letters H and h, the genotype for each of the following people are:
Person 1: Hh.
Person 2: cannot be determined .
Person 3: Hh .
2. Huntington's Disease is an autosomal dominant disorder. This is supported by the statement that every person who inherits the HD gene will eventually develop the disease.
3. Since Person 3 has the genotype Hh and is having a child with someone who does not have Huntington's Disease (hh). The chance their offspring will have Huntington's is 50%.
1. Using the letters H and h, the genotype for each of the following people can be determined based on the information provided:
Person 1: Since the disease is described as autosomal dominant, and every person who inherits the HD gene will eventually develop the disease, Person 1 must be affected by Huntington's Disease (HD). Therefore, the genotype for Person 1 would be Hh.
Person 2: The information does not indicate whether Person 2 is affected by Huntington's Disease or not. Without further information, we cannot determine their genotype.
Person 3: Person 3 is described as having a child with someone who does not have Huntington's. Since Huntington's Disease is an autosomal dominant condition and every person who inherits the HD gene will develop the disease, Person 3 must have the HD gene. Therefore, the genotype for Person 3 would be Hh.
2.Huntington's Disease is an autosomal dominant disorder. This is supported by the statement that every person who inherits the HD gene will eventually develop the disease. Autosomal dominant disorders are caused by the presence of a single copy of the mutated gene (Huntington gene in this case). If one parent has the HD gene, there is a 50% chance of passing it on to each offspring.
3. Since Person 3 has the genotype Hh and is having a child with someone who does not have Huntington's Disease (hh), we can use a Punnett Square to determine the chances of their offspring having Huntington's.
Punnett Square:
H h
h Hh hh
The Punnett Square shows that there is a 50% chance that their offspring will have Huntington's Disease (Hh genotype) and a 50% chance that their offspring will not have Huntington's Disease (hh genotype). Therefore, the chance their offspring will have Huntington's is 50%.
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A gardener is planting tomato plants. She buys two packs of seeds: Pack A and Pack B. She plants all the seeds and gives them the same amount of water, light, and fertilizer. After a few months, she measures the plants and notices that the plants grown from Pack B are shorter on average than plants grown from Pack A.
What could explain the difference in height between the plants from the two packs of seeds?
One possible explanation for the difference in height between the plants from Pack A and Pack B could be genetic variation between the two packs of seeds. It's possible that Pack A contains tomato plants with a genetic predisposition for taller growth, while Pack B contains plants with a genetic predisposition for shorter growth.
Another possible explanation could be differences in the soil quality or environmental conditions where the plants were grown, which could have affected their growth.
However, since the gardener gave the plants the same amount of water, light, and fertilizer, it seems less likely that environmental factors would be the sole cause of the difference in height.
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Where does the Completion digestion occurs
In 5 words
Complete digestion occurs in small intestine
Extra info:- The main process of digestion takes place in small intestineThe partially digested food from stomach goes into small intestine where the breakdown of food molecules is done as well as absorptionSmall intestine has finger like projections called villi and microvilli for absorption The main enzymes for digestion like lipase, amylase are secreted by small intestineAnswer:
Small intestine.
Explanation:
The small intestine is the longest part of the digestive system and is responsible for the majority of digestion and absorption of nutrients. It is divided into three sections: the duodenum, jejunum, and ileum. The small intestine is where most of the digestion and absorption of food takes place. The duodenum is responsible for the breakdown of proteins, fats, and carbohydrates, while the jejunum and ileum absorb the nutrients from the digested food.
Which is not part of a plants life cycle? A. The seed germinates. B. The seed becomes a young adult. C. The adult plant flowers and then produces fruit. D. The sprout becomes a seedling.
Answer:
B. The seed becomes a young adult.
Explanation:
In the life cycle of a plant, the seed germinates, the sprout emerges from the seed and becomes a seedling, the seedling grows into an adult plant, the adult plant flowers and produces fruit (containing seeds), and the cycle starts again when the seeds are dispersed and germinate. However, the term "young adult" is not typically used to describe a stage in a plant's life cycle.
How will ancestral and derived traits differ from one another?
Which best defines soil? (1 point)
Responses
Soil is made up of minerals, air, water, and humus.
Soil is made up of minerals, air, water, and humus.
Soil is made of rock and dirt.
Soil is made of rock and dirt.
Soil is made of natural materials that were never living.
Soil is made of natural materials that were never living.
The soil is dark and brown.
will give brainliest
Soil is best defined as a mixture of minerals, air, water, and humus. So the right option is Soil is made up of minerals, air, water, and humus.
Soil is a mixture of minerals, air, water, and organic matter that provides the necessary nutrients and physical support for plants to grow. It is a living ecosystem that is home to millions of microorganisms, fungi, and other organisms that contribute to its health and productivity.
The minerals in soil come from the breakdown of rocks and other geological materials. Air and water are essential for soil structure and nutrient transport. Humus, or organic matter, is made up of dead plant and animal material that decomposes over time, adding nutrients and improving soil structure.
Soil is an important resource that plays a crucial role in agriculture, forestry, and environmental sustainability. It provides a habitat for many plant and animal species, helps regulate the Earth's climate, and plays a role in the carbon cycle.
However, soil can be degraded through erosion, overuse, and pollution. It is important to protect and manage soil resources to ensure their continued health and productivity for future generations.
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4. Draw an owl food chain with the names of organisms and arrows between. Label the
producers and the different types of consumers.
The order of the food chain is:
Grass plants → Grasshopper → Shrew → Owl.
The grass plant is a producer in this food chain, a grasshopper is a herbivore (primary consumer), the shrew is a carnivore (secondary consumer), and an owl is an omnivore (tertiary consumer).
The food chain represents the linear sequence of organisms through which nutrients and energy gets transferred from one trophic level of the organism to another.
In a food chain, the trophic level may be characterized as the hierarchical series that is illustrated by organisms that are the exact number of steps extracted from the primary producers.
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Please Draw a diagram of mitosis and one of meiosis (2N=2).
Mitosis leads to cell division resulting in identical daughter cells. and Meiosis leads to cell division resulting in haploid daughter cells with variation.
Thus, during Interphase of Mitosis, the cell grows and replicates its DNA to be ready to divide. Chromatin gathers into discernible chromosomes during prophase. Chromosomes position themselves along the cell's equatorial plane during metaphase. Sister chromatids split apart and travel to the cell's polar opposites during anaphase. Chromosomes reach their poles during telophase, and then the cell divides into two daughter cells during cytokinesis.
During the interphase stage of Meiosis (2N=2), the cell goes through growth and DNA replication. Chromatin condenses, homologous chromosomes join up in a process known as synapsis, crossing over takes place, and the nuclear membrane disintegrates during Prophase I. Homologous chromosomal pairs align along the equatorial plane during Metaphase I.
Homologous chromosomes split apart and travel to the cell's opposing poles during anaphase I. Chromosomes reach the poles and two new cells are created during telophase I. Prophase II, Metaphase II, Anaphase II, and Telophase II follow this step.
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Reginald punnett sought to apply the insight obtained by Mendel to explain the laws of inheritance in the structured fashion.
Punnett squares are representations of crosses between individuals. They show that, by gene-independent assortment, different gametes are produced, and how they combinate. By making punnett squares, genotypic and phenotypic probabilities in the progeny can be predicted.
What is a Punnett square?
The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
one parent's gametes are placed on the top of the square the other parent's gametes are placed on the vertical left of the squareThere are as many raws and columns as gametes.
The intersections between the raws and the columns determine gamete combinations. These combinations are the genotypes and phenotypes of the progeny.
Punnett square not only shows the probabilities of getting offspring with different genotypes and their consequent phenotypes, but also exhibit the independent segregation of genes during cell division, and the resulting gametes.
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Complete question:
Reginald Punnett sought to apply the insights obtained by mendel to explain the laws of inheritance in structured fashion. What is a Punnett square and how is it used?
Health consequences of disease obesity
Answer:
cardiovascular disease (mainly heart disease and stroke), type 2 diabetes, musculoskeletal disorders like osteoarthritis, and some cancers (endometrial, breast and colon).
Explanation:
honestly...can be alot but this is a break down :)
Answer:
Type 2 Diabetes, Cardiovascular Disease, Sleep Apnea, Joint Problems and Certain Cancers.
Explanation:
Type 2 Diabetes: Obesity increases the risk of developing type 2 diabetes. Excess body fat disrupts insulin production and impairs insulin sensitivity, leading to elevated blood sugar levels.
Cardiovascular Disease: Obesity contributes to conditions like hypertension, high cholesterol, and atherosclerosis, increasing the risk of heart attacks, strokes, and other cardiovascular problems.
Sleep Apnea: Obesity is a major risk factor for sleep apnea, a disorder characterized by interruptions in breathing during sleep. The excess weight can obstruct the airways, leading to disrupted sleep patterns and inadequate oxygen supply.
Joint Problems: Obesity puts additional strain on joints, especially in weight-bearing areas such as the knees and hips. This can lead to joint pain, osteoarthritis, and reduced mobility.
Certain Cancers: Obesity has been linked to an increased risk of developing various types of cancer, including breast, colon, endometrial, and kidney cancer. The excess body fat may promote the growth of cancer cells and contribute to tumor development.
These diseases highlight the serious health consequences of obesity, emphasizing the importance of maintaining a healthy weight through balanced nutrition, regular exercise, and appropriate medical care.
Pleases help, thank you
The given cross is an example of a monohybrid cross, where the inheritance of only one trait is seen through crossing of the parents.
The allele for tusk can be denoted by T and tusklessness being recessive will be denoted by t. Thus, the genotype for the tusk will be TT/Tt and the genotype for tusklessness will be tt.
The monohybrid cross can be drawn as is shown in the image attached.
The genotype of parents in this case will be Tt x Tt
The probability of having a tuskless calf will be 25%
The probability of having a calf with tusks will be 75%
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Not all migrations are round-trip migrations. Do some research about nomadic migrations, irruption, and removal or one-way migrations. How do the reasons for these migrations differ from those of round-trip migrators?
Answer:
Nomadic migrations, also known as transhumance, involve the seasonal movement of people and their livestock between different regions in search of resources such as water and pasture. These migrations are typically one-way, as the people and animals move from one location to another and do not return to their original location. The reasons for nomadic migrations are often related to environmental factors such as drought or seasonal changes in resource availability.
Irruption is another type of one-way migration that occurs when a population of animals or people suddenly moves into a new area in large numbers. This type of migration is often driven by a sudden change in environmental conditions, such as a natural disaster or a sudden increase in resource availability.
Removal migrations, also known as forced migrations, occur when people are forcibly removed from their homes and relocated to a new area. This type of migration is often the result of political or social factors such as war, persecution, or forced resettlement.
The reasons for these one-way migrations differ from those of round-trip migrators, who typically move back and forth between two or more locations. Round-trip migrations are often driven by economic or social factors such as job opportunities or family ties. One-way migrations, on the other hand, are often driven by environmental or political factors that make it impossible or undesirable for people or animals to return to their original location.
Please answer!!!
I need a claim. Evidence. And reasoning for
Is cloning human beings a scientifically sound practice?
Claim: Cloning human beings is a scientifically sound practice
Evidence: Cloning, genetic engineering, and its medical benefits.
Reasoning: All the available evidence points to the fact that cloning humans is achievable.
Is cloning human beings a scientifically sound practice?Claim: Cloning human beings is a scientifically sound practice.
Evidence:
Successful Animal CloningAdvances in Genetic EngineeringMedical and Therapeutic BenefitsReasoning:
The evidence presented supports the claim that cloning human beings is a scientifically sound practice. The successful cloning of animals, coupled with advances in genetic engineering and stem cell research, indicates that the fundamental principles and techniques required for human cloning are scientifically feasible.
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