biology unit 6 vocab quiz with complete solution 2025

biology unit 6 vocab quiz with
complete solution 2025
directional selection - correct answer ✔occurs when natural selection favors
one of the extreme variations of a trait


stabilizing selection - correct answer ✔occurs when intermediate phenotypes
are favored by natural selection


disruptive selection - correct answer ✔occurs when individuals at the upper
and lower ends of a distribution curve have higher fitness than individuals
near the middle


genetic drift - correct answer ✔random change in allele frequency caused by
series of chance occurrences that cause an allele to become more or less
common in a population


bottleneck effect - correct answer ✔A change in allele frequency following a
dramatic reduction in the size of a population


founder effect - correct answer ✔change in allele frequencies as a result of
the migration of a small subgroup of a population


genetic equilibrium - correct answer ✔situation in which allele frequencies in
a population remain the same


Hardy-Weinberg Principle - correct answer ✔principle that allele frequencies
in a population will remain constant unless one or more factors cause the
frequencies to change