ch09_lecture - Meiosis Chapter 9 Sexual Reproduction*...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Meiosis Chapter 9
Background image of page 1

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

View Full DocumentRight Arrow Icon
Sexual Reproduction* Chromosomes are duplicated in germ cells Germ cells undergo meiosis and cytoplasmic division Cellular descendents of germ cells become gametes Gametes meet at fertilization
Background image of page 2
Asexual Reproduction* Single parent produces offspring All offspring are genetically identical to one another and to parent
Background image of page 3

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

View Full DocumentRight Arrow Icon
Sexual Reproduction* Involves Meiosis Gamete production Fertilization Produces genetic variation among offspring
Background image of page 4
Homologous Chromosomes Carry Different Alleles* Cell has two of each chromosome One chromosome in each pair from mother, other from father Paternal and maternal chromosomes carry different alleles
Background image of page 5

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

View Full DocumentRight Arrow Icon
Sexual Reproduction Shuffles Alleles* Through sexual reproduction, offspring inherit new combinations of alleles, which leads to variations in traits This variation in traits is the basis for evolutionary change
Background image of page 6
Gamete Formation* Gametes are sex cells (sperm, eggs) Arise from germ cells testes ovaries anther ovary
Background image of page 7

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

View Full DocumentRight Arrow Icon
Chromosome Number* Sum total of chromosomes in a cell Germ cells are diploid (2 n ) Gametes are haploid ( n ) Meiosis halves chromosome number
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2011 for the course BIO 101 taught by Professor Nchowdhury during the Spring '11 term at BRAC University.

Page1 / 29

ch09_lecture - Meiosis Chapter 9 Sexual Reproduction*...

This preview shows document pages 1 - 9. Sign up to view the full document.

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