Question

why gamete is haploid and zygote is diploid?

Answer 1

Male gamete is called sperm and female gamete is called egg.

A zygote is a eukaryotic cell formed by a fertilization event between two gametes. Gametes are haploid. Hence zygote is diploid.

Gametes are haploid in nature. A haploid cell has only one set of chromosomes; hence it only has half of the genetic material necessary to form a complete organism. Zygote is formed when gametes fuse and is hence diploid in nature.

Answer 2

Answer:

In human fertilization, a released ovum (a haploid secondary oocyte with replicate chromosome copies) and a haploid sperm cell (male gamete)—combine to form a single 2n diploid cell called the zygote. ... The other product of meiosis is the second polar body with only chromosomes but no ability to replicate or survive.