Question

Mimulus lewisii and Mimulus cardinalis are two plants that occupy the same habitat but do not interbreed in nature. However, they can be readily crossed in the laboratory to produce fertile offspring. Which of the following is a likely reason that prevents interbreeding of these plants in nature?

Answer 1

answer choices (please post these next time)

1. They only reproduce by self-pollination.
2. They have incompatible gametes.
3. They show seasonal differences in flowering.

Answer 2

thoughts on this one?

as the problem states, the two plants *can* be bred together in a lab, so it's not their genes causing the lack of interbreeding. (eliminating choice 2). between 1 and 2, which one do you think is more likely the reason for the intrebeeding?