Question

Although 2 cells called gametes fuse , the product is a single cell called zygote. Justify.

Answer 1

since two cells fuse int 1 and those cells are called reproductive cells, they have only 1-1 set of 23 chromosomes and when they combine they make up a cell with 46 chromosomes which is the actual number of chromosomes of human cell.

they divide mieotically and sperm and ova fuse to form zygote.