Question

1. When an allele becomes more common in a species, what changes?

A. gene flow

B. the gene pool

C. the type of species

D. the number of chromosomes

2. Which word describes what happens when different populations of the same species develop different allele frequencies?

A. convergence

B. polyploidy

C. divergence

D. hybridization

3. What is a biological race?

A. a population in a species in the process of divergence

B. a subset of a species in a particular location

C. a human phenotype

D. a unique species that closely resembles another

Answer 1

1) When an allele becomes more common in a species, what changes?

Answer:(b) The gene pool

The allele always affects the gene pool in an organism.When the allele is too common or rare it leads to changes in the gene pool.This eventually causes mutations and evolutions.The various alleles at all the gene loci in all individuals in a population is called the gene pool.

2) What happens when different populations of the same species develop different allele frequencies

Answer: (c) divergence

divergence is defined as process in which two or more populations of an ancestral species accumulate independent genetic changes.This causes a diffusion of the same species to different and isolated environments which blocks the gene flow among the distinct populations allowing differentiated fixation of characteristics.

3) Biological race:

Answer: (B) a subset of species in a particular location.

Biological race is a geographically isolated breeding population that shares certain characteristics in higher frequencies than other populations of that species.They are all confined to a particular geographical location.Race is an informal rank in the taxonomic hierarchy, below the level of subspecies