The domestic cat has 38 pairs of chromosomes How many chroma

The domestic cat has 38 pairs of chromosomes. How many chromatids would be present in each cell at the following stages? Assume cytokinesis is initiated during mid telophase and is not complete until the very end of telophase.

a) first polar body.

b).liver cell at anaphase.

c) kidney cell at late telophase.

d) mature sperm cell..

_ e) stomach cell in the G2 stage.

_ f) a cell in metaphase II..

Solution

a) First polar body has half number of chromosomes as the parent and there are 2 chromatids per chromosome. This means that there will be 19 chromosomes in the polar body and 38 chromatids.

b) Liver cell is somatic and there will be 38 chromosomes present. This means that there will be 72 chromatids.

c) Kidney cell is somatic and there will be 38 chromosomes present. This means that there will be 72 chromatids.

d) Mature sperm cell will have 19 chromosomes and 38 chromatids.