Homework SourseAccording to the biological species concept for speciation t
According to the biological species concept, for speciation to occur, _____.
| the number of chromosomes in the gene pool must change |
| changes to centromere location or chromosome size must occur within the gene pool |
| large numbers of genes that affect numerous phenotypic traits must change |
| at least one gene, affecting at least one phenotypic trait, must change |
Solution
Answer:
(4) At least one gene, affecting at least one phenotypic trait must change.
Explanation:
Species are defined to be a group of individuals which can interbreed and are reproductively isolated from individuals of a different species group. The process of formation of a new species is referred to as the biological species concept.
One process of species formation is when the species split and the members of that group starts developing different phenotypic characteristics. The difference in phenotypic characteristics prevent them from mating anymore, hence new species evolve. For phenotypic differences to arise, at least one gene must change, which affects at least one phenotype trait.
