18.Which scenario would natural selection most likely work on?
A.an island with lizards that all look alike and are all eating the same food
B.a population of salmon with different skin colors that attract mates
C.all of the insects in a certain desert that have the same adaptation for saving water
D.a population of parakeets that have the same size beak
20.According to the Hardy-Weinberg principle, if p and q are unchanging in a population, the population is in equilibrium. What type of population does this scenario represent?
A.a population with constant allele frequencies
B.a population that is exposed to many environmental changes
C.a population that is experiencing rapid genetic mutations
D.a stable population that will soon experience migration
2007-02-18 15:18:23 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology