Answer:
B.
Explanation:
The placenta is a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord.
The skeletal system. Including bones and cartiladge.
Scientists are creating vaccinations that prevent people from getting bird flu. If the virus mutates, a new vaccine needs to be made. The vaccine needs to be tested, which can be dangerous. It also takes a long time for scientists to know whether the vaccine works.
The chromosome configuration that designates a person with turner syndrome is when one chromosome is deleted. Instead of 46 chromosomes, it will be 45.X. Because the second chromosome determines the sex, patients with turner syndrome are neither male or female.
No, because in a Punnett Square it only uses two patents DNA
