Did you know that yeast use a mating factor pathway to to signal to reproduce sexually? This video will review over the process of how two haploid yeast cells combine to form a diploid cell. A mating factor is secreted by yeast cells secrete that attracts them to their mates. Once the mating factor of one yeast binds to the receptor on another yeast, an outgrowth called a 'shmoo' forms, which allows the yeast cells to fuse together. [8:01]