The Origin of the 46 Chromosomes in a Human Zygote

Question

The origin of the 46 chromosomes in a human zygote is
A)all from the sperm cell.
B)half from DNA and half from RNA.
C)half from the sperm and half from the egg.
D)all from the egg.

Accepted Answer

The 46 chromosomes in a human zygote come from the fusion of a sperm cell (which contains 23 chromosomes) and an egg cell (which also contains 23 chromosomes), resulting in the zygote having a total of 46 chromosomes. Therefore, half of the chromosomes come from the egg and half come from the sperm.