What is it called when a segment of a chromosome is lost

Translocation

Explanation:

Sometimes a piece of chromosome will attach onto a different, non- homologous chromosome that has also lost a piece.

chromosomal disorder

Explanation:

when a chromosome break happens in each of two nonhomologous chromosomes and then the two breaks rejoin in a arrangements it is called translocation .

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.