Multiple Choice
Male mallard ducks have had emerald green head feathers and wings with metallic blue patches for hundreds of years,whereas females have been drab,brown-feathered ducks.This phenotypic situation suggests that mallards may be an example of ____.
A) directional selection
B) Polyploidy
C) allopatric speciation
D) disruptive selection
E) sexual selection
Correct Answer:
Verified
Correct Answer:
Verified
Q37: Reproductive isolation is marked by the _
Q38: For the following statements, select the best
Q39: Deviations from _ indicate that a population
Q40: In _ speciation,a geographic barrier interrupts gene
Q41: If the frequency of a recessive gene
Q43: Stabilizing selection occurs when <br>A) the environment
Q44: What is the type of speciation that
Q45: _ is rapid diversification into new species
Q46: Choose the most appropriate letter for each.<br>-genetic
Q47: Choose the most appropriate letter for each.<br>-species<br>A)a