Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Evolution

Question:

Read the given passage and answer the questions that follow :-
In a given population one can find out the frequency of occurrence of alleles of a gene of a locus. This frequency is supposed to remain fixed and even remain the same through generations. Hardy Weinberg principle stated it using algebraic equations. This principle says that allele frequencies in a population are stable and is constant from generation to generation the gene pool remains a constant. This is called genetic equilibrium.

What does the Hardy-Weinberg principle state about allele frequencies in a population?

Options:

They vary randomly

They remain constant from generation to generation

They increase over time

They decrease over time

Correct Answer:

They remain constant from generation to generation

Explanation:

The correct answer is Option (2) –They remain constant from generation to generation

The principle stating that allele frequencies in a population remain stable and constant from generation to generation, under certain ideal conditions, is known as the Hardy-Weinberg principle.

This principle describes an idealized situation in which allele and genotype frequencies in a population remain constant from one generation to the next if certain assumptions, such as no mutation, no migration, random mating, large population size, and absence of natural selection, are met.