The Modern Theories of Evolution

Q. A sudden inheritable change in the genetic material of an organism is called .

1. extinction
2. abiogenesis
3. mutation
4. transformation

Q.

How will genetic engineering affect human evolution in the future?

Q.

New species may be formed if-

(i) DNA undergoes significant changes in germ cells

(ii) Chromosome number changes in the gamete

(iii) There is no change in the genetic material

(iv) Mating does not take place

1. (i) and (ii)

2. (i) and (iii)

3. (ii), (iii) and (iv)

4. (i), (ii) and (iii)

Q.

___ was the scientist who explained the theory of acquired characteristics after Darwin.

Q.

According to Neo-Darwinism natural selection operates through

1. Variations

2. Natural selection operates on dispute among organisms

3. Reduce in the population of weaker organisms

4. Differential reproduction

Q. Give the technical term for sudden, heritable change in the gene.​

Q. _____ was the scientist who explained the theory of acquired characteristics after Darwin.

1. Alfred Russel Wallace
2. Jean Baptiste de Monet Lamarck
3. Gregor Mendel
4. Robert Hook

Q. The bottleneck effect causes an increase in the genetic variety.

1. True
2. False

Q. The theory which proposes that microevolution leads to macroevolution, is known as

1. Neo - Lamarckism
2. Neo - Mendelism
3. Modern Evolutionary Synthesis
4. Neo - Darwinism

Q. Rate of mutation is very low in organisms

1. False
2. True

Q. The first attempt to solve the problem of organic evolution was done by

1. Mendel
2. Haeckel
3. Lamarck
4. Darwin

Q. What are chromosomal mutations? How can they be induced?

Q.

The theory which proposes that microevolution leads to macroevolution, is known as

1. Neo - Lamarckism
2. Neo - Mendelism
3. Modern Evolutionary Synthesis
4. Neo - Darwinism

Q.

According to Neo-Darwinism natural selection operates through

1. Differential reproduction

2. Variations

3. Reduction in population of weaker organisms

4. Natural selection operates on dispute among organisms

Q. In the 'Natural selection Theory', Darwin did not believe in which one of the following :

1. Parasites and predators as natural enemies
2. Survival of the fittest
3. Struggle for existence
4. Discontinuous variations

Q.

What are mutations. What are the factors that lead to mutations?

Q. Social Darwinism was a theory used to justify all of the following except:

1. Anti-trust legislation
2. A lack of social programs to help the unemployed
3. Laws and social actions giving white Anglo-Saxon Protestants at the expense of other races, ethnicities, and religion.
4. Laissez-faire governmental policy.
5. Imperialist actions by the US government.

Q. Mutation is the single and lone driving force for evolution to occur.

1. True
2. False