Atavism

Q.

State some examples of Atavism in human beings.

Q. Reappearance of a trait that had been lost during evolution is called .

1. parallelism
2. divergent
3. convergent
4. atavism

Q. Reappearance of a trait that had been lost during evolution is called .

1. parallelism
2. divergent
3. convergent
4. atavism

Q. In evolutionary history, in which one of the following periods did the flowering plants make their first appearance?

1. Certaceous of Mesozoic era
2. Permian of Paleozoic era
3. Devonian of Paleozoic
4. Pleocene of cenopzic era

Q. Explain.embryological evidence of evolution??

Q.

A baby has been born with a small tail. It is an example of:

1. Retrogressive evolution

2. Mutation

3. Atavism

4. Metamorphosis

Q. Which of the following are NOT examples of atavism?

1. The phalanges of horse
2. Vermiform appendix
3. Movement of pinna
4. Human body hair

Q. A baby has been born with a small tail. It is the case exhibiting

1. mutation
2. atavism
3. metamorphosis
4. retrogressive evolution

Q. Scientists are studying the evolutionary history of two closely related mammal species. They identify the earliest known evidence of each species and the most recent bones of the presumed common ancestor. The data is recorded in the chart.

	Common Ancestor Bones	Species 1 Bones	Species 2 Bones
Location	Asia and North America	North America	Asia
Age (years)	15, 000	5, 000	6, 000

Based on the data, which of the following is a reasonable estimate of when populations of the common ancestor became reproductively isolated?

1. 1, 000 years ago
2. 6, 000 years ago
3. 13, 000 years ago
4. 5, 000 years ago

Q.

A baby has been born with a small tail. It is an example of:

1. Retrogressive evolution

2. Mutation

3. Atavism

4. Metamorphosis