DNA, Genes & Genetics MCQs with Answers

Techniques for manipulation of gene to achieve desirable characters are called?

• A.Genetic Engineering
• B.Biotechnology
• C.Cloning
• D.Tissue Culture

The role that humans play in artificial selection is to _?

• A.Choose which organisms breed, and which do not
• B.Create new genes in organisms
• C.Speed up natural mutations randomly
• D.Eliminate all genetic variation

What factor increases the possibility of microevolution?

• A.High gene flow between populations
• B.Large population size
• C.Stable environmental conditions
• D.Loss of genetic diversity

Which of the following factors does not influence effective population size?

• A.Sex ratio
• B.Variation in family size
• C.Mutation
• D.Fluctuating population size

Contribution an individual makes to the gene pool of the next generation is _?

• A.Gene flow
• B.Genetic drift
• C.Relative fitness
• D.Natural selection

The number of amino-acids found in most of the proteins is:

• A.20
• B.22
• C.18
• D.24

You sample a population of butterflies and find that 42% are heterozygous at a particular locus. What should be the frequency of the recessive allele in this population?

• A.0.42
• B.0.21
• C.0.58
• D.Allele frequency cannot be determined from this information

Two normal (Aa) parents have chance of albino child _?

• A.25%
• B.50%
• C.75%
• D.100%

What distinguishes the concept of special creation from concept of evolution?

• A.Life was created by a supernatural power
• B.Life results from innumerable changes
• C.Life originated only once in history
• D.Life exists only on Earth

When a population is in Hardy-Weinberg equilibrium, which of the following is true?

• A.Mating is random
• B.Natural selection is occurring
• C.Genetic drift is significant
• D.Gene flow is constant