Which statement best describes the reproductive isolation between populations of Rhagoletis flies, one of which is found on apple trees and the other that is found on hawthorn trees?
A) Hybrid offspring of the two populations are sterile.
B) Hawthorn trees and apple trees grow in different areas, so the two populations do not encounter each other.
C) Male flies of one population cannot physically mate with females from the other population.
D) Apple-liking males are more likely to encounter apple-liking females than hawthorn-liking females.
E) Eggs laid by female flies mated with a male from the "wrong" population do not develop.
D
You might also like to view...
Following treatment with restriction enzymes, what procedure would be used to isolate DNA fragments of different lengths?
A. transformation B. transfection C. gel electrophoresis D. colony hybridization E. Western blotting
What benefit do muscle cells gain from exercise? a. Increases resistance to fatigue
b. Increases the number of mitochondria within the cells. c. Increases blood flow. d. Promotes healthy bones. e. All are benefits of exercise.
A tube foot of a sea star moves when the small muscular bulb called the ____ contracts, forcing fluid
into the tube foot.
a. ampulla b. ossicle c. radial canal d. ring canal e. madreporite
The figure below shows the results of a selection experiment in the laboratory in which two Drosophila repli-cate lines were selected for longer life span. Which of the following is the most accurate conclusion that you can draw from this data?
a. There is a genetic basis for longevity in Drosophila. b. There is heritable variation for longevity in a Drosophila population. c. Senescence is heritable in Drosophila. d. The slope of a fitted line through the data points would provide an estimate of the heritability of longevity.