Definitions / Explanation : Genetic drift & Gene migration (gene flow)

English

Gujarati

Hindi

6.Evolution

medium

Definitions / Explanation : Genetic drift & Gene migration (gene flow)

Option A

Option B

Option C

Option D

Solution

It refers to chance elimination of the genes of certain traits independent of genes useful or harmful effects when a section of population migrates or dies of natural calamity. It alters the gene frequency of the remaining population.

– If the migrating individuals interbreed with the members of local population, these may bring many new alleles into the local pool of the host population. This is called gene migration.

This addition or removal of alleles when individuals enter or leave a population from another locality is called flow.

Standard 12

Biology

Share

Similar Questions

A population is in Hardy- weinberg equilibrium for a gene with only two alleles. If the gene frequency of an allele $A$ is $0.7$, the genotype frequency of $Aa$ is

medium

(AIIMS-2014)

In a population of $1000$ individuals $360$ belong to genotype $AA, 480$ to Aa and the remaining $160$ to $aa$. Based on this data, the frequency of allele $A$ in the population is

medium

(NEET-2014)

In a species, the weight of newborn ranges from $2$ to $5\; \mathrm{kg} .97 \%$ of the newbom with an average weight between $3$ to $3.3\; \mathrm{kg}$ survive whereas $99 \%$ of the infants born with weights from $2$ to $2.5\; \mathrm{kg}$ or $4.5$ to $5 \;kg$ die. Which type of selection process is taking place?

hard

(NEET-2019)

Natural selection where more individuals acquire specific character value other than the mean character value, leads to:

medium

(NEET-2022)

Genetic variation in a population arises due to

medium

(NEET-2013)