Question

Why number of chromosomes are double in zygote than gametes?

Answer 1

Answer:

Fusion of two gametes.....

Explanation:

When the two gametes fuse, they form a zygote. A zygote is a single cell fertilized embryo. Since two gametes have fused to create the zygote, the number of chromosomes had to double. ... Each parent produces a gamete with half of their genetic material, aka chromosomes.