In order for speciation to occur, what must be true?
A) The number of chromosomes in the gene pool must change.
B) Changes to centromere location or chromosome size must occur within the gene pool.
C) Large numbers of genes that affect a single phenotypic trait must change.
D) Large numbers of genes that affect numerous phenotypic traits must change.
E) At least one gene, affecting at least one phenotypic trait, must change.

Question

Quizplus · Accepted Answer

Speciation can occur through the accumulation of genetic differences between populations. This usually involves changes in the DNA sequence of genes, which can result in differences in phenotypic traits between populations. At least one gene must change in order for speciation to occur. This can be a gene that affects one or more phenotypic traits. The other options listed may result in genetic changes, but they are not necessary for speciation to occur.

In Order for Speciation to Occur, What Must Be True