The following options are all reproductive barriers. which one is an example of a prezygotic barrier in which the two different species do mate?
1 two crayfish species cannot interbreed because their genitalia do not engage properly with each other.
2 hybrid mules produced by mating donkeys and horses are sterile.
3 one bird species lives in wetlands, the other in dry forests; hence, they do not encounter each other.
4 two dragonfly species regularly mate, but their gametes are incompatible.

Marianne is comparing two animals: a fruit fly and a fruit bat. she asks, "do a fruit fly and a fruit bat share a common ancestor in their evolutionary history? " according to evolutionary theory, what is the answer to marianne's question?

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.