Definitions / Explanation : Genetic drift & Gene migration (gene flow)
Definitions / Explanation : Genetic drift & Gene migration (gene flow)
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.
Similar Questions
What is founder effect ?
What is founder effect ?
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
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
- [NEET 2014]
Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history ? Do you agree or disagree ? Provide explanation to your answer.
Gene flow occurs through generations. Gene flow can occur across language barriers in humans. If we have a technique of measuring specific allele frequencies in different population of the world, can we not predict human migratory patterns in pre-history and history ? Do you agree or disagree ? Provide explanation to your answer.
Random genetic drift in a population probably results from
Random genetic drift in a population probably results from
- [AIPMT 2003]
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as
- [NEET 2013]