Mitosis And Meiosis And Sex Chromosomes Flashcards
(3 cards)
Mitosis
Mitosis is cell division used by normal cells in body e.g skin cells
Single cell divides into two identical daughter cells each with 46 chromosomes (same as parent cell)
Meiosis
Formation of egg or sperm cell
Cell with 46 chromosomes divides twice, resulting in 4 daughter cells each with only 23 chromosomes
The 23rd pair of chromosomes in a zygote determine..
22 pairs of non sex chromosomes and 1 pair of sex chromosomes
(23 pairs in total = 46)
Female = xx Male=xy