Which of the following is not an example of a prezygotic barrier to reproduction between two potentially separate species?
a. a race of flies raised on apple and a race of flies raised on hawthorn emerge in different seasons in response to the timing of fruit ripening.
b. eggs of chickens cannot be fertilized by the sperm of ducks.
c. the specialist pollinating wasps of fig species a are unable to access the flowers of fig species b, and vice versa
d. two closely-related species of anopheles mosquito can mate but cannot produce fertile progeny because they have different chromosome structures.
e. the courtship “waving signal” of male fiddler crabs is unique to each species so that females only respond to the mating display of males of their own species.
Answers: 1
Biology, 22.06.2019 07:30
Answer ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.
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Biology, 22.06.2019 10:20
Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f
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Biology, 22.06.2019 10:30
Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.
Answers: 3
Which of the following is not an example of a prezygotic barrier to reproduction between two potenti...
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