NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A measure of how commonly a particular allele occurs in a population is known as the
A
gene pool
B
allele frequency
C
mutation rate
D
phenotype
Explanation: 

Detailed explanation-1: -Relative allele frequency is the percentage of all copies of a certain gene in a population that carry a specific allele. This is an accurate measurement of the amount of genetic variation in a population.

Detailed explanation-2: -Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

Detailed explanation-3: -An allele frequency is calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population. Allele frequencies can be represented as a decimal, a percentage, or a fraction.

Detailed explanation-4: -The frequency of an allele is defined as the total number of copies of that allele in the population divided by the total number of copies of all alleles of the gene. We can calculate population allele frequencies from genotype numbers.

Detailed explanation-5: -Allele frequency (also called gene frequency) is the term used to describe the fraction of gene copies that are of a particular allele in a defined population. From: Encyclopedia of Genetics, 2001.

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