Gene Pool

Q.

Hardy-Weinberg operates in the absence of:

1. Natural selection

2. All of these

3. Recombination

4. Mutations

Q.

The non-directional force that alters Hardy-Weinberg equilibrium is:

1. Mutations

2. Gene flow

3. Gene recombination

4. Genetic drift

Q. Changes in the frequency of occurrence of alleles in a population could be due to

1. mutation
2. genetic flow
3. genetic recombination
4. natural selection

Q. Changes in the frequency of occurrence of alleles in a population could be due to

1. mutation
2. genetic flow
3. genetic recombination
4. natural selection

Q. Assertion :Founder effect may lead to formation of new species. Reason: Founders carry all the parental gene pool to a new location.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.
Mutation, selection and genetic drift are three important forces which are responsible for evolutionary changes

1. True
2. False

Q. Genetic variability can be created by

1. mass selection
2. mutation
3. clone selection
4. hybridization

Q.

name the factor responsible for genetic variation in an organism

Q. Changes in the frequency of occurrence of alleles in a population could be due to ___________.

1. Mutation
2. Random mating
3. All of these
4. Migration of individuals

Q. Genetic mutation changes the heritable phenotypic characters by altering the sequence of

1. The somatic characters of any one parent
2. The template of RNA synthesis
3. The RNA in cytoplasm
4. The amino acids of proteins formed in parents

Q. Scientists hypothesize that humans have undergone at least two bottleneck events. The second is thought to have occurred at the Bering land bridge (Beringia) between Asia and North America during the Pleistocene ice age.
Which of the following could test the hypothesis?

1. Compare the genome size of Native American populations to African, Asian, European, and Middle Eastern populations.
2. Compare heterozygosity from Native American populations to African, Asian, European, and Middle Eastern populations.
3. Conduct archeological digs in the Beringia area to check for a written record of a major natural disaster.
4. Test the variation within the genome of humans to variation with the genome of other mammals.

Q. Select the correct statement.

1. Heritable variation allows for evolution.
2. Adaptive radiation allows for mutation.
3. Crossing-over allows for mitosis.
4. Translocation allows for DNA replication.
5. Cellular differentiation allows for meiosis.

Q.

Why does variation not affect the individuals? How does variation becomes a fast process?

Q. Study of frequency of different genes and trends change is

1. Gene pool
2. Population genetics
3. Gene flow
4. Hardy-Weinberg genetic equilibrium

Q. Changes in the frequency of occurrence of alleles in a population could be due to ___________.

1. Mutation
2. Random mating
3. Migration of individuals
4. All of these

Q. Why is genetic drift more likely to occur in a population with few members?

Q. Changes in the frequency of occurrence of alleles in a population could be due to

1. mutation
2. genetic flow
3. genetic recombination
4. natural selection

Q. Changes in the frequency of occurrence of alleles in a population could be due to ___________.

1. Mutation
2. Random mating
3. Migration of individuals
4. All of these

Q. Gene pool refers to