In a population where the ratio of brown fur to white fur is 1:1, this means that the two phenotypes are equally represented. Therefore, the frequency of the white fur trait in the rabbit population is 50%.
The correct response is 50%.
In a certain population of rabbits, the ratio of the phenotypes of brown fur and white fur is 1:1. What is the frequency of the white fur trait in the rabbit population?(1 point)
Responses
1%
1%
100%
100%
50%
50%
25%
9 answers
Kamar wants to know his mother's blood type. Kamar knows that his blood type is AB and his father’s blood type is heterozygous A. What can Kamar assume about his mother’s blood type?(1 point)
Responses
Kamar’s mother must be AB because blood type AB is inherited from one parent
Kamar’s mother must be AB because blood type AB is inherited from one parent
Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.
Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.
Kamar’s mother must be either AB or B because blood types AB is considered codominant
Kamar’s mother must be either AB or B because blood types AB is considered codominant
Kamar’s mother must be O because the recessive allele allows for Kamar to get type A from his father
Responses
Kamar’s mother must be AB because blood type AB is inherited from one parent
Kamar’s mother must be AB because blood type AB is inherited from one parent
Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.
Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.
Kamar’s mother must be either AB or B because blood types AB is considered codominant
Kamar’s mother must be either AB or B because blood types AB is considered codominant
Kamar’s mother must be O because the recessive allele allows for Kamar to get type A from his father
To determine Kamar's mother's possible blood type based on Kamar's blood type (AB) and his father's blood type (heterozygous A, which can be represented as IAi):
- Kamar has blood type AB (genotype IAIB). This means he inherited one allele for type A (IA) and one allele for type B (IB).
- Kamar's father has a heterozygous A blood type, which means his genotype is either IAIA or IAi. If he is IAi (heterozygous), he can pass on either the A allele (IA) or the i allele (which corresponds to type O). However, since Kamar's blood type is AB, he must have inherited the B allele from his mother.
To produce a child with type AB blood, Kamar's mother must have at least one B allele. Therefore, the possible blood types for Kamar's mother could be:
- Type B (genotype IBi)
- Type AB (genotype IAIB)
So, Kamar can assume that his mother must be either AB or B.
The correct response is: Kamar’s mother must be either AB or B because blood types AB is considered codominant.
Which of the following best describes natural selection?(1 point)
Responses
When traits are determined by multiple genes and environmental factors and cannot be predicted using Punnett squares
When traits are determined by multiple genes and environmental factors and cannot be predicted using Punnett squares
The process by which organisms are separated by chance events, such as natural disasters, causing the frequency of the population to change.
The process by which organisms are separated by chance events, such as natural disasters, causing the frequency of the population to change.
The process by which organisms that are better adapted to the environment tend to survive and produce more offspring.
The process by which organisms that are better adapted to the environment tend to survive and produce more offspring.
When a small sample of a population leaves and establishes a new population.
Responses
When traits are determined by multiple genes and environmental factors and cannot be predicted using Punnett squares
When traits are determined by multiple genes and environmental factors and cannot be predicted using Punnett squares
The process by which organisms are separated by chance events, such as natural disasters, causing the frequency of the population to change.
The process by which organisms are separated by chance events, such as natural disasters, causing the frequency of the population to change.
The process by which organisms that are better adapted to the environment tend to survive and produce more offspring.
The process by which organisms that are better adapted to the environment tend to survive and produce more offspring.
When a small sample of a population leaves and establishes a new population.
The option that best describes natural selection is:
The process by which organisms that are better adapted to the environment tend to survive and produce more offspring.
This definition captures the essence of natural selection, emphasizing the survival and reproductive advantages conferred by advantageous traits in a given environment.
The different variants of a trait available to a gene are called(1 point)
Responses
phenotypes.
phenotypes.
polygenic traits.
polygenic traits.
genotypes.
genotypes.
alleles.
Responses
phenotypes.
phenotypes.
polygenic traits.
polygenic traits.
genotypes.
genotypes.
alleles.
The different variants of a trait available to a gene are called alleles.
Alleles are distinct forms of a gene that can result in different traits or characteristics.
What is one similarity between genetic drift and gene flow? (1 point)
Responses
They both cause a change in the frequency of traits in a population.
They both cause a change in the frequency of traits in a population.
They both occur in a population by chance.
They both occur in a population by chance.
They are both caused by natural disasters, such as hurricanes.
They are both caused by natural disasters, such as hurricanes.
They are both caused by the migration of species.
Responses
They both cause a change in the frequency of traits in a population.
They both cause a change in the frequency of traits in a population.
They both occur in a population by chance.
They both occur in a population by chance.
They are both caused by natural disasters, such as hurricanes.
They are both caused by natural disasters, such as hurricanes.
They are both caused by the migration of species.
The correct response is:
They both cause a change in the frequency of traits in a population.
Both genetic drift and gene flow can lead to changes in the genetic composition of a population, affecting the frequency of traits over time.