Question

1. Which of the following is NOT true of Genetic drift:

A. It occurs when no allele is advantageous

B. It refers to random changes to allele frequencies

C. It works faster in large populations

2. A severe drop in the numbers in a population is called:

A. an epidemic

B. population bottleneck

C. a genetic crash

D. none of these

3. Transcription:

A. is the first stage of protein synthesis

B. occurs in the ribosome

C. produces a peptide chain

4. Which of the following is NOT true of Hardy Weinberg equilibrium:

A. it is a mathematical formula

B. it enables us to estimate allele distribution

C. it applies only when natural selection is operating

D. none of the above (all of thse are true of Hardy Weinberg equation)

5. How many chromosome pairs occur in a normal somatic human somatic cell?

A. 22

B. 23

C. 24

D. 48

6. The ABO blood system is an example of:

A. codominance

B. polygenism

C. all of the above

D. the first two answers only

Answer 1

1. Genetic drift refers to the random changes to allele frequency in a population. Hence the correct answer is: b. It refers to random changes in allele frequency.

2. When a population is drastically reduced then that phenomenon is referred to as bottleneck effect. Hence the correct answer is: b. Bottleneck effect.

3. Transcription is the conversion of DNA to mRNA which converts into protein. Hence this is the first step in the translation. Hence the correct answer is: a. First stage of protein synthesis.

4. Hardy Weinberg equilibrium is established only when natural selection is not acting. Hence the correct answer is: C. . it applies only when natural selection is operating.

5. There are 23 pairs of chromosomes in the somatic cell of humans.

6. The ABO blood grouping is a codominance inheritance.

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