Asked by x
Identify the mutation below that would be passed on to living offspring if it happened in a parent.(1 point)
Responses
a chromosomal deletion that affects the ability of blood to carry oxygen
a chromosomal deletion that affects the ability of blood to carry oxygen
an insertion mutation in a gamete that deactivates a gene for hair color
an insertion mutation in a gamete that deactivates a gene for hair color
a silent mutation in the genes of the pancreas cells that code for insulin
a silent mutation in the genes of the pancreas cells that code for insulin
a substitution error that takes place in a somatic cells that causes skin cancer
Responses
a chromosomal deletion that affects the ability of blood to carry oxygen
a chromosomal deletion that affects the ability of blood to carry oxygen
an insertion mutation in a gamete that deactivates a gene for hair color
an insertion mutation in a gamete that deactivates a gene for hair color
a silent mutation in the genes of the pancreas cells that code for insulin
a silent mutation in the genes of the pancreas cells that code for insulin
a substitution error that takes place in a somatic cells that causes skin cancer
Answers
Answered by
x
Methylation is an example of(1 point)
Responses
gene mapping
gene mapping
epigenetics
epigenetics
gene editing
gene editing
DNA replication
Responses
gene mapping
gene mapping
epigenetics
epigenetics
gene editing
gene editing
DNA replication
Answered by
x
A population of cheetahs on the plains in southern Africa has very little genetic variation compared to other species in the area. Scientists are concerned that the cheetah population will not survive extreme environmental changes. What is the name of the effect the scientist observed and why is it a concern?(1 point)
Responses
Frameshift mutation, because it only produces ineffective proteins
Frameshift mutation, because it only produces ineffective proteins
Disaster effect, because the cheetahs have mutated to produce ineffective proteins
Disaster effect, because the cheetahs have mutated to produce ineffective proteins
Bottleneck effect, because environmental stresses affecting one cheetah could affect them all
Bottleneck effect, because environmental stresses affecting one cheetah could affect them all
Substitution mutation, because the these mutations cannot be passed to offspring
Responses
Frameshift mutation, because it only produces ineffective proteins
Frameshift mutation, because it only produces ineffective proteins
Disaster effect, because the cheetahs have mutated to produce ineffective proteins
Disaster effect, because the cheetahs have mutated to produce ineffective proteins
Bottleneck effect, because environmental stresses affecting one cheetah could affect them all
Bottleneck effect, because environmental stresses affecting one cheetah could affect them all
Substitution mutation, because the these mutations cannot be passed to offspring
Answered by
x
Crossing-over and independent assortment can occur during meiosis. How does this support the claim that meiosis results in inheritable genetic variations?(1 point)
Responses
It maintains genetic stability.
It maintains genetic stability.
It allows for new combinations of genes.
It allows for new combinations of genes.
It results in identical daughter cells.
It results in identical daughter cells.
It produces cells that have genetic combinations that aren’t passed on.
Responses
It maintains genetic stability.
It maintains genetic stability.
It allows for new combinations of genes.
It allows for new combinations of genes.
It results in identical daughter cells.
It results in identical daughter cells.
It produces cells that have genetic combinations that aren’t passed on.
Answered by
x
In humans, brown hair is dominant and blond hair is recessive. Only 2% of people have red hair, and in order to receive it, both parents must pass the allele on to their offspring. What does this imply about red hair?(1 point)
Responses
It is sex-linked.
It is sex-linked.
It is dominant.
It is dominant.
It is recessive.
It is recessive.
It is codominant.
Responses
It is sex-linked.
It is sex-linked.
It is dominant.
It is dominant.
It is recessive.
It is recessive.
It is codominant.
Answered by
x
Which of the following would lead to increased genetic variation in offspring?(1 point)
Responses
independent assortment of chromosomes during mitosis that creates a new combination of alleles.
independent assortment of chromosomes during mitosis that creates a new combination of alleles.
a crossing over event during mitosis that creates a new combination of alleles in a somatic cell
a crossing over event during mitosis that creates a new combination of alleles in a somatic cell
reproduction during asexual reproduction that results in genetically identical offspring.
reproduction during asexual reproduction that results in genetically identical offspring.
a DNA replication error in a gamete of an individual during meiosis
Responses
independent assortment of chromosomes during mitosis that creates a new combination of alleles.
independent assortment of chromosomes during mitosis that creates a new combination of alleles.
a crossing over event during mitosis that creates a new combination of alleles in a somatic cell
a crossing over event during mitosis that creates a new combination of alleles in a somatic cell
reproduction during asexual reproduction that results in genetically identical offspring.
reproduction during asexual reproduction that results in genetically identical offspring.
a DNA replication error in a gamete of an individual during meiosis
Answered by
GPT-4o mini
The mutation that would be passed on to living offspring if it happened in a parent is:
**an insertion mutation in a gamete that deactivates a gene for hair color.**
Mutations that occur in gametes (sperm or egg cells) can be inherited by offspring, while mutations in somatic cells (non-gamete, body cells) are not passed on to the next generation. The other options either affect somatic cells or are silent mutations that do not change the protein produced.
**an insertion mutation in a gamete that deactivates a gene for hair color.**
Mutations that occur in gametes (sperm or egg cells) can be inherited by offspring, while mutations in somatic cells (non-gamete, body cells) are not passed on to the next generation. The other options either affect somatic cells or are silent mutations that do not change the protein produced.
Answered by
GPT-4o mini
Methylation is an example of **epigenetics**.
Epigenetics refers to heritable changes in gene expression that do not involve alterations to the underlying DNA sequence, and methylation is one of the key mechanisms by which these changes can occur.
Epigenetics refers to heritable changes in gene expression that do not involve alterations to the underlying DNA sequence, and methylation is one of the key mechanisms by which these changes can occur.
Answered by
GPT-4o mini
The name of the effect the scientist observed is the **Bottleneck effect, because environmental stresses affecting one cheetah could affect them all.**
The bottleneck effect occurs when a population's size is significantly reduced for at least one generation, leading to a decrease in genetic diversity. This lack of genetic variation makes the population more vulnerable to environmental changes, diseases, and other stresses because they have fewer genetic options to adapt.
The bottleneck effect occurs when a population's size is significantly reduced for at least one generation, leading to a decrease in genetic diversity. This lack of genetic variation makes the population more vulnerable to environmental changes, diseases, and other stresses because they have fewer genetic options to adapt.
Answered by
GPT-4o mini
The correct response is:
**It allows for new combinations of genes.**
Crossing-over and independent assortment during meiosis increase genetic diversity by producing gametes with different combinations of alleles. This genetic variation is essential for evolution and adaptation, as it can lead to offspring with unique traits that may be beneficial in changing environments. These new combinations of genes are inheritable, meaning they can be passed on to future generations.
**It allows for new combinations of genes.**
Crossing-over and independent assortment during meiosis increase genetic diversity by producing gametes with different combinations of alleles. This genetic variation is essential for evolution and adaptation, as it can lead to offspring with unique traits that may be beneficial in changing environments. These new combinations of genes are inheritable, meaning they can be passed on to future generations.
Answered by
GPT-4o mini
The correct response is:
**It is recessive.**
The statement that both parents must pass the allele for red hair to their offspring implies that red hair is a recessive trait. This means that an individual must inherit two copies of the recessive allele (one from each parent) in order to express the red hair phenotype. If an individual has at least one dominant allele for brown hair, they will have brown hair instead.
**It is recessive.**
The statement that both parents must pass the allele for red hair to their offspring implies that red hair is a recessive trait. This means that an individual must inherit two copies of the recessive allele (one from each parent) in order to express the red hair phenotype. If an individual has at least one dominant allele for brown hair, they will have brown hair instead.
Answered by
GPT-4o mini
The correct response is:
**a DNA replication error in a gamete of an individual during meiosis.**
A DNA replication error in a gamete can lead to mutations, which contribute to increased genetic variation in the offspring. This variation can result in new traits that may be passed on to the next generation.
It's important to note that independent assortment and crossing over typically occur during meiosis, not mitosis. Therefore, the first two options are incorrect. Additionally, asexual reproduction results in genetically identical offspring, so that option is also incorrect.
**a DNA replication error in a gamete of an individual during meiosis.**
A DNA replication error in a gamete can lead to mutations, which contribute to increased genetic variation in the offspring. This variation can result in new traits that may be passed on to the next generation.
It's important to note that independent assortment and crossing over typically occur during meiosis, not mitosis. Therefore, the first two options are incorrect. Additionally, asexual reproduction results in genetically identical offspring, so that option is also incorrect.
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