Question

Fill up the blanks in the following paragraph by selecting the correct option.
When migration of a section of population to another place and population occurs, (i) change in the original as well as in the new population.New genes/ alleles are added to the (ii) population and these are lost from the (iii) population.There would be a (iv) if this gene migration happened multiple times.If the same occurs by chance, it is called (v), Sometimes the change in allele frequency is so different in the new sample of population that they become a different species.The original drifted population becomes founders and the effect is called (vi).

A) Natural selection, new, old, gene flow, gene frequencies, founder effect
B) Gene frequencies, old, new, natural selection, gene flow, bottleneck effect
C) Gene frequencies, new, old, gene flow, genetic drift, founder effect
D) Mutations, old, new, natural selection, gene flow, bottle-new effect

Answer 1

Genetic drift is the change in the occurrence of an existing gene variant in a population caused by random sampling of species.A special case of genetic drift, arising where a minority group in a population breaks off from the initial population and forms a new one, is the founder effect.

Complete answer:
First let’s know about evolution before answering this question.Evolution is the concept of biology in which the distinct types of animals, plants, and other living organisms on Earth originate from other pre-existing types and that in subsequent generations the distinguishable variations are attributed to changes.One of the basic keystones of modern biological theory is the theory of evolution.The theory of evolution is based on the premise that all organisms are related and evolve over time naturally.Evolution depends on genetic diversity in a population that changes an organism's physical traits (phenotype).

Now, let us find the answer for the given question:-
When migration of a section of population to another place and population occurs, gene frequencies change in the original as well as in the new population.New genes/ alleles are added to the new population and these are lost from the old population.There would be a gene flow if this gene migration happened multiple times.If the same occurs by chance, it is called genetic drift , Sometimes the change in allele frequency is so different in the new sample of population that they become a different species.The original drifted population becomes founders and the effect is called founder effect.

Thus, the correct answer is option (C) Gene frequencies, new, old, gene flow, genetic drift, founder effect.

Note: Evolution is a change in biological populations' heritable traits over subsequent generations.The expressions of genes that are passed down during reproduction from parent to offspring are these characteristics.As a consequence of evolution, genetic recombination and other causes of genetic variation, different traits appear to occur within any particular population.Evolution happens as evolutionary mechanisms operate on this variation, such as natural selection and genetic drift, resulting in certain traits being more dominant or uncommon within a population.