Holt Modern Biology 1st Edition by John Postlethwait ,Janet Hopson

Exercise 1

For each pair of terms, explain how the meanings of the terms differ.
A. allele frequency and phenotype frequency
b. stabili z ing selection and disruptive selection
c. immigration and emigration
d. geographic isolation and reproductive isolation
e. allopatric speciation and sympatric speciation
F. punctuated equilibrium and gradualism