11 5 linkage
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
644
On Slideshare
644
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
27
Comments
0
Likes
1

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. 11-5. Gene Linkage and Mapping• Gene linkage – Thomas Hunt Morgan – Genes on the same chromosome are linked and usually inherited into the same gametes – It is the chromosome that assort independently, not individual genes
  • 2. • Linkage and crossing over – linked genes may also seperate into different gametes – Because of crossing over – The farther apart two genes are on the same chromosome, the greater the chance of crossing over between them. Why?
  • 3. A B C DCrossing over will disrupt linkage between Aand B more often than C and D
  • 4. • Gene map – The relative locations of each known gene on one chromosomeExact location on chromosomes Chromosome 2
  • 5. • Sex-linked • Genes on the sex chromosome (usually on x, called x-linked) • Eg: Color blindness gene, Hemophilia gene• Pedigree: a chart that shows genetic relationship in families male female mating offspring in order sex not known Have disorder