At birth the umbilical cord is cut. Stem cells can be obtained from the umbilical cord.
Many people think that the stem cells for treating human conditions should be obtained
from umbilical cords rather than human embryos.
Suggest one reason why

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.