An alien lands at ECC and allows a BIO 108 class to sample its somatic cells. The karyotype reveals that the aliens have a total of 200 chromosomes in each somatic cell. Assuming this alien reproduces sexually, how many chromosomes would its gametes have?

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

"do a testcross with a homozygous recessive plant."