Chorionic villi sampling (cvs) is a test to determine whether fetal cells have genetic abnormalities and can be performed as early as 8 weeks. chorionic villi cells are removed using a small tube that is passed through the cervix. these cells are cultured and undergo chromosomal analysis.
explain why chorionic villi cells will determine whether the fetus has genetic abnormalities.

The zygote is formed by the fusion of the male and female gamete during the process of sexual reproduction. Chorionic villi sampling (CVS) is used to determine the sex of the baby and genetic abnormalities.

The fetal cells and chorionic villi has the same genome. The villib are derved from the cells known as trophoblast that are known to form the blastocyst outer layer. This provide nutrition to the embryo through the placenta. These cells first differentiate from the egg and shares the same genetic makeup. Any abnormalities in these  cells shows the genetic abnormalites.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.