Which description is correct for both oogenesis and spermatogenesis?

a. The cells have 46 chromosomes until meiosis Il is completed.
b. After meiosis I, the cells have 23 chromosomes.
c. Part of meiosis l is completed before birth.
d. The entire process takes about 70 days.

the principle of segregation describes how pairs of gene variants are separated into reproductive cells. from his data, mendel formulated the principle of segregation. we now know that the segregation of genes occurs during meiosis in eukaryotes, which is a process that produces reproductive cells called gametes.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101