Sex linked traits
Upcoming SlideShare
Loading in...5
×
 

Sex linked traits

on

  • 1,031 views

 

Statistics

Views

Total Views
1,031
Views on SlideShare
1,031
Embed Views
0

Actions

Likes
0
Downloads
20
Comments
0

0 Embeds 0

No embeds

Accessibility

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

Sex linked traits Sex linked traits Presentation Transcript

  • Sex-Linked Traits X chromosome Y chromosome Boy or Girl? The Y Chromosome “Decides”
  •  
  • What are Sex Linked Traits ?
    • In 1910, Thomas Morgan discovered traits linked to sex chromosomes in fruit flies.
    • Some genes are attached to the X and Y chromosomes
    • EXAMPLE: In humans, colorblindness and baldness are found on the X chromosomes
    View slide
  • What are Sex Linked Traits ?
    • In Men, traits expressed anytime present
    • In Women, must have two genes to show trait
    • Children inherit baldness from their mothers
    View slide
  • Punnett Square: What sex will the offspring be? 50% chance of a male or a female child.
  • Baldness is carried by the mother Phenotype: 25% bald males 25% bald carrier females 25% not bald males 25% non-carrier females
  • If Dad is bald, will you be bald? Phenotype: 0% bald males 100% bald carrier females
  • What if Mom is bald? Phenotype: 100% carrier females 100% bald males