Question

Hindi

6.Evolution

medium

Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

Solution

(d) : Genetic drift (Sewall Wright effect) is the random change in the frequency of alleles in a population over successive generations in the gametes. Each new generation differs from its parental generation with regard to allele frequencies simply because of random variation in the distribution of gametes. This process is more rapid in smaller populations, or when the alleles concerned confer no apparent benefit compared to their counterparts.

Std 12

Biology

Hardy-Weinberg equilibrium is not affected by which of the following factors?

medium

Organic evolution would have not been taken place

medium

Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism ?

medium

$^{\prime} XX ^{\prime}$ is a type of selection process in evolution $^{\prime} XX ^{\prime}$ promotes the population changes in one particular direction $^{\prime} XX ^{\prime}$ favours small or large sized individuals, mean size of population changes in $^{\prime} XX ^{\prime}$. Identify $^{\prime} XX^{\prime}$

medium

Factor affecting the Hardy-Weinberg principlesare

$(I)$ Gene flow ;

$(II)$ Genetic drift

$(III)$ Mutation

$(IV)$ Genetic recombination

$(V)$ Natural selection

The correct combination is

medium

Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

Solution

Similar Questions

Hardy-Weinberg equilibrium is not affected by which of the following factors?

Organic evolution would have not been taken place

Which is the most common mechanism of genetic variation in the population of a sexually reproducing organism ?

Factor affecting the Hardy-Weinberg principlesare $(I)$ Gene flow ; $(II)$ Genetic drift $(III)$ Mutation $(IV)$ Genetic recombination $(V)$ Natural selection The correct combination is

Factor affecting the Hardy-Weinberg principlesare

$(I)$ Gene flow ;

$(II)$ Genetic drift

$(III)$ Mutation

$(IV)$ Genetic recombination

$(V)$ Natural selection

The correct combination is