Meiosis160-page4

Meiosis160-page4 - In protists, which remain single cell...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Meiosis and Life Cycles - 4 Diploid Life Cycle In animals, meiosis generally produces just haploid sex cells, which at fertilization start the next generation. The only haploid cells of the animal are egg or sperm, and the respective maturation processes are called oogenesis and spermatogenesis. When gametes fuse, the zygote grows by mitosis producing the adult stage. All cells will be diploid. The animal life cycle is a diploid life cycle. Haploid Life Cycle In many protists, and some fungi, haploid gametes fuse to form a zygote, but the zygote immediately does meiosis forming single haploid cells.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: In protists, which remain single cell organisms, the nucleus is then haploid. At some time, the single cells may just decide to become gametes and fuse with another to make a zygote, or haploid cells may do mitosis to make more individuals asexually. Haploid life cycles can be more complex. Fungi, and some algae may make multicellular haploid organisms from single-celled meiotic product, by mitosis. At some time, special areas of the haploid body will become gamete-making structures, and haploid gametes are formed by mitosis....
View Full Document

Ask a homework question - tutors are online