AP BIOLOGY

EVOLUTION

EVOLUTION OF A POPULATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When allelic frequencies remain unchanged, a population is in genetic equilibrium. This statement expresses which of the following?
A
genetic drift
B
Hardy-Weinberg principle
C
sympatric speciation
D
prezygotic isolating mechanism
Explanation: 

Detailed explanation-1: -When allelic frequencies remain unchanged, a populations in genetic equilibrium. This statement expresses which of the following. A population diverges and becomes reproductively isolated.

Detailed explanation-2: -When a population is in Hardy-Weinberg equilibrium for a gene, it is not evolving, and allele frequencies will stay the same across generations. There are five basic Hardy-Weinberg assumptions: no mutation, random mating, no gene flow, infinite population size, and no selection.

Detailed explanation-3: -Hardy Weinberg principle states that the allelic frequency remains constant through generations and the gene pool remains constant. This phenomenon is called genetic equilibrium.

Detailed explanation-4: -According to Hardy-Weinberg principle, allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

Detailed explanation-5: -Correct answer: By definition, the Hardy-Weinberg principle states that genotype and allele frequencies will remain constant throughout generations. In order for equilibrium to occur, there must be a large, randomly mating population with no selection, genetic drift, migration, or mutation.

There is 1 question to complete.