3 16 Crossing Over
Upcoming SlideShare
Loading in...5
×
 

3 16 Crossing Over

on

  • 618 views

 

Statistics

Views

Total Views
618
Views on SlideShare
556
Embed Views
62

Actions

Likes
0
Downloads
3
Comments
0

1 Embed 62

http://lpsbio.wordpress.com 62

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

3 16 Crossing Over 3 16 Crossing Over Presentation Transcript

  • Launch
    • Write the definition of a gene and an allele.
    • What are the 8 stages of meiosis?
  • Cell Division
    • In cell division, new cells are made from an old cell.
    • During cell division, these chromosomes are copied and one set of chromosomes are given to each new cell.
  • Meiosis
    • 8 stages:
    • Prophase I
    • Metaphase I
    • Anaphase I
    • Telophase I
    • Prophase II
    • Metaphase II
    • Anaphase II
    • Telophase II
  • Homologous Chromosomes
    • Homologous Chromosomes are chromosomes that contain the same genes, but not necessarily the same alleles
    B b A A c c d D
  • Crossing Over
    • Crossing over is a process in which different parts of homologous chromosomes switch places
    • Crossing over leads to increased genetic recombination
    • This occurs during Prophase I
  •  
  • II. Cell Division-Meiosis -Crossing over and the exchange of genes in meiosis is a major source of variation among organisms. In meiosis, you end up with 4 daughter cells that can be combined with another sex cell to make a new organism. MEIOSIS I MEIOSIS II Possible gametes Possible gametes Chromosome A Chromosome B Chromosome a Chromosome b
    • http://www.youtube.com/watch?v=pdJUvagZjYA&feature=related