Multicellular organisms use cell division my ptosis for growth in the maintenance and repair of cells and tissues there are a few cells in the body that did not undergo mitosis most somatic cells divide regularly some more than others single celled organisms may use cell division as a method of a reproduction regardless of the reason for my ptosis the process ensures genetic continuity consider the model of the cell cycle explain the purpose of the areas labeled checkpoint in the cycle all but one could apply

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.

The lineage of pea plants produced round seeds for four generations. the plants that fertilized these pea plants also produced round seeds. however, in the fifth generation, the plant produced to two plants with wrinkled seeds. can that be possible?

Which individual below would be considered heterozygous? a.dd b.dd c.dd