a. Explain the process of natural selection that leads to speciation.�

1.	a. Explain the process of natural selection that leads to speciation. b. List the three different ways in which this process operates in nature. Explain any one of the processes.
Answer» (a) ▪ There has been gradual evolution of life forms with new forms arising at different periods of history. ▪ Any population has built-in variations in characteristics which adapt it better to environment. ▪ The characteristics which enable some populations or individuals to survive better in natural conditions (climate, food, physical factors) would out-breed others (Survival of the fittest). ▪ Those populations which are better fit (reproductively fit) in an environment will be selected by nature and will survive more (Natural selection). ▪ Adaptability is inherited and fitness is the end result of ability to adapt and get selected by nature. (b) Natural selection is based on following factual observations: • Limited natural resources. • Stable population size except seasonal fluctuation. • Varying characteristics of members of a population. • Most of the variations are inherited.

a. Explain the process of natural selection that leads to speciation. b. List the three different ways in which this process operates in nature. Explain any one of the processes.

Answer»

(a)

▪ There has been gradual evolution of life forms with new forms arising at different periods of history.

▪ Any population has built-in variations in characteristics which adapt it better to environment.

▪ The characteristics which enable some populations or individuals to survive better in natural conditions (climate, food, physical factors) would out-breed others (Survival of the fittest).

▪ Those populations which are better fit (reproductively fit) in an environment will be selected by nature and will survive more (Natural selection).

▪ Adaptability is inherited and fitness is the end result of ability to adapt and get selected by nature.

(b) Natural selection is based on following factual observations:

• Limited natural resources.

• Stable population size except seasonal fluctuation.

• Varying characteristics of members of a population.

• Most of the variations are inherited.

a. Explain the process of natural selection that leads to speciation. b. List the three different ways in which this process operates in nature. Explain any one of the processes.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment