What can be learned from ultrasound, amniocentesis, and chorionic villi sampling? what risks are involved in each procedure

These procedures are used to check for foetal genetic abnormalities during pregnancy

The risks for each procedure are as follows:

Ultrasound: Generally safe procedure

Chorionic Villi Sampling: Miscarriage, infection in the womb infection, vaginal bleeding.

Amniocentesis: Miscarriage,  Injury to the baby or mother, infection, and preterm labor

the answer is d (apex) good luck : ))

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: