This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Meiosis (Chapter 10) • Human Karyotype o Easily identify homologous pair of chromosomes Similar size Similar in shape (centromere position) Can’t see genetic constitution of genetic content of chromosomes o 22 pairs of autosomes (not sex chromosomes) o 1 pair of sex chromosomes Not same size, shape and genetic content, but not homologous yh • Mitosis o Prophase- one cell with duplicated chromosomes o Anaphase-sister chromatids move to the opposite poles o Daughter cells – two cells with unduplicated chromosomes • Sexual life cycle (fusion of gametes) o Two haploid gametes fuse o Diploid zygote • Asexual Reproduction: a single parent splits, buds, or fragments to reproduce two or more individuals. • Haploid cells o Each contain only one member of each homologous chromosome pairs • Interphase meiosis I, Mid-prophase I Late prophase • Premeiotic Interphase o Includes an S Phase o All chromosomes become duplicated chromosomes • Stages of Meiosis o Meiosis I prophase I, Metaphase I, anaphase I, telephase I o Meiosis I I prophase I I, Metaphase I I, anaphase I I, telephase I I...
View Full Document
- Fall '08
- 20%, 60%, homologous chromosomes exchange, chromosomes Sexual life