Question

which combination contains the normal chromosome number?
o a human egg - 46; a human sperm - 46; a human zygote - 46
o a human egg - 46; a human sperm - 23; a human zygote - 23
o a human egg - 23; a human sperm - 46; a human zygote - 46
o a human egg - 23; a human sperm - 23; a human zygote - 46
o a human egg - 23; a human sperm - 23; a human zygote - 23

Explanation:

Human eggs and sperms are gametes. Gametes are produced by meiosis and have half the number of chromosomes (23) of somatic cells. A zygote is formed by the fusion of an egg and a sperm, so it has the full number of chromosomes (46).

Answer:

a human egg – 23; a human sperm – 23; a human zygote – 46