3_20_07 - March 20, 2007 Biology 130 Meiosis Sexual...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
March 20, 2007 Biology 130 Meiosis – Sexual Reproduction Process of making sperm and egg have half the number of chromosomes Some plant cells use mitosis to use sexual reproduction 23 pairs of chromosomes = haploid number number isn’t significant, pattern is n = haploid number 2n = diploid number mitosis – even mixed up chromosomes can still divide and duplicate meiosis only happens in one direction mitosis o growth o healing – repair o divides exactly o all alike meiosis o Sexual/genetic recombination o Not making new genes but mixes up the ones that are already there o Diploid haploid o All different Animals is direct – meiosis makes sperm and egg Plant/fungi make spores and other growth stages Asexual reproduction – o makes identical copies o Aphids o Natural cloning o If environment is very favorable, use asexual o If no other organisms are around, asexual Sexual reproduction o Combines genes from two separate organisms
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/29/2009 for the course NPB NPB 101 taught by Professor Weidner/wingfield during the Spring '08 term at UC Davis.

Page1 / 3

3_20_07 - March 20, 2007 Biology 130 Meiosis Sexual...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online