There are several mechanisms through which reproductive isolation occurs. which situation is an example of behavioral isolation?

Hello. This question is incomplete. The complete question is:

" There are several mechanisms through which reproductive Isolation occurs. Which situation is an example of behavioral isolation?

A. Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile. B. Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse. C. The reproductive organs of snails only properly align when the male and female belong to the same species. D. Males of different, closely related species of fireflies signal for mates by flashing different light sequences. "

D. Males of different, closely related species of fireflies signal for mates by flashing different light sequences.

Explanation:

Behavioral isolation is a type of reproductive isolation and is the most important type of prezygotic isolation. This process consists of different types of premarital nuptial stops, which are genetically defined and intended to arouse the partner. When this type of isolating mechanism acts we can visualize sexual courting, displays and signs of recognition between individuals of the same species that do not exist, which prevents sexual attraction between populations. We have as an example fireflies, where the male flash the light on their bodies to provoke the sexual arousal of females.

urease test media contains 2% urea and phenol red as an indicator.An increase inPH due to the production of ammonia results in a color change from yellow (ph6.8) to bright pink (ph8.2).