Answer quick a particular allele in mice is lethal in homozygotes. heterozygotes, however, develop normally. why does this allele remain in the population? a) homozygous mice pass the allele to their offspring b) the recessive allele is masked in heterozygotes c) natural selection selects for the homozygous individual with normal alleles d) natural selection selects against the heterozygous individual

Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.