After the eighth week of development what is a human embryo called?
a zygote
b infant
c fetus
d morula

C. Fetus
After the eighth week, the human embryo is called a fetus. The fetal stage in which development starts takes place about eleven weeks later. 

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A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.

Yes it is hereditary because of the penis