Mating

id assume it was possible as there has been evidence of grizzly bears mating with polar bears creating a hybrid. Here are some showing this hybridization. http://www.newscientist.com/article/mg21528754.600-hardy-polar-bears-have-survived-past-global-warming.html ...

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can someone explain on reinforcement of prezygotic isolation related to mating calls in male frogs?

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... interacts with GAL80 to de-repress GAL4 when galactose is present (“GAL3”). NOTE: Yeast are normally haploid, but the diploid cells resulting from mating can persist as diploid colonies until induced to undergo meiosis. ______ a. When this mutant is crossed to a known GAL4 recessive mutant strain, ...

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... she will mate with 12-15 drones. If the weather holds, she may return to the drone congregation area for several days until she is fully mated. Mating occurs in flight. The young queen stores up to 6 million sperm from multiple drones in her spermatheca. She will selectively release sperm for ...

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... they have the same father (as they will each get exactly the same 50% of their genes from their haploid father). However, when a queen goes on a mating flight (usually 1 or 2 in the first few days after she becomes queen) she mates with around 10-20 drones from other hives at 'drone congregation ...

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