Chapter 13 - have matching pairs of homologous chromosomes....

Info iconThis preview shows pages 1–25. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style Biology 1107 Lecture # 25 03-05-08 Chapter 13 Meiosis and sexual life cycles
Background image of page 1

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

View Full DocumentRight Arrow Icon
Meiosis  – and Sexual Life Cycles n Meiosis reduces the number of  chromosomes by half in the  formation of  haploid gametes  (animals) or spores (plants)
Background image of page 2
Two families – Can you match the kids with the parents?
Background image of page 3

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

View Full DocumentRight Arrow Icon
Human Sexual Life Cycle
Background image of page 4
Sperm “attacking” an egg
Background image of page 5

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

View Full DocumentRight Arrow Icon
Diploid – Having two of each type  of chromosome (2N). Haploid – Having a single set of  chromosomes (1N)
Background image of page 6
Human Female Chromosomes
Background image of page 7

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

View Full DocumentRight Arrow Icon
Homologous chromosomes   come in pairs.  Diploid species 
Background image of page 8
Background image of page 9

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

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11

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

View Full DocumentRight Arrow Icon
Background image of page 12
Background image of page 13

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

View Full DocumentRight Arrow Icon
Background image of page 14
Background image of page 15

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

View Full DocumentRight Arrow Icon
Background image of page 16
Background image of page 17

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

View Full DocumentRight Arrow Icon
Background image of page 18
Background image of page 19

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

View Full DocumentRight Arrow Icon
Background image of page 20
Background image of page 21

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

View Full DocumentRight Arrow Icon
Background image of page 22
Background image of page 23

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

View Full DocumentRight Arrow Icon
Background image of page 24
Background image of page 25
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: have matching pairs of homologous chromosomes. Carry Animal life cycle Meiosis I and Meiosis II Two divisions - separate the homologs Crossing over and recombination Crossing over and recombination Always four products of meiosis! spermatogenesis Meiosis I: Separates homologous chromosomes Meiosis II: Separates the Chromatids Independent Assortment Comparison Mitosis and Meiosis Preparation of karyotype Human male chromosomes Down syndrome Trisomy 21 Nondisjunction 1st meiotic division 2nd meiotic division 1st meiotic division...
View Full Document

This note was uploaded on 08/26/2008 for the course BIOL 1107 taught by Professor Armstrong during the Spring '07 term at University of Georgia Athens.

Page1 / 25

Chapter 13 - have matching pairs of homologous chromosomes....

This preview shows document pages 1 - 25. Sign up to view the full document.

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