Genetic Changes through Generations

Q. Which of the following is the closest relative of man?

1. Chimpanzee
2. Gorilla
3. Orangutan
4. Gibbon

Q.

Which of the following is most important for speciation?

1. Reproductive isolation

2. Behavioral isolation

3. Tropical isolation

4. Seasonal isolation

Q.

Reason of diversity in living being is

1. Mutation

2. Long term evolutionary change

3. Gradual change

4. Short term evolutionary change

Q.

Which is the most important factor for continuity of a species from evolutionary point of view?

1. Formation of gametes

2. Synthesis of proteins

3. Replication of genetic material

4. None of these

Q. The mutations which occur in gametes are known as mutations.

1. somatic
2. spontaneous
3. germline
4. induced

Q. In the course of evolution, the genetic material remains same throughout the generations.

1. False
2. True

Q. Those species originated from common ancestor show more conserved sequence in genetic material than those of unrelated species.

1. False
2. True

Q. Mutation is deemed as a necessary evil because

1. it can lead to speciation
2. it can lead to extinction
3. it can lead to evolution
4. it can lead to adaptation

Q. Which of the following(s) cause(s) mutation?

1. DNA replication
2. Chemical agents
3. Ionising radiation
4. Tissue damage

Q. Read the given statement and identify the correct option with respect to the type of evolutionary evidence.

“Some of the proteins present in the blood of man and ape are similar, the base sequence in nucleic acids of related organisms are alike.”

1. Anatomical evidence
2. Biogeographical evidence
3. Paleontological evidence
4. Biochemical evidence