Polygenic Inheritance      Peter Baek
Assessment Statements•   10.3.1•   Define polygenic inheritance.•   10.3.2•   Explain that polygenic inheritance can    co...
Define polygenic inheritance.• A single characteristic controlled by multiple  genes• polygenic inheritance gives continuo...
Explain that polygenic inheritance can contribute to continuous  variation using two examples, one of which must be human ...
Explain that polygenic inheritance can contribute to continuous  variation using two examples, one of which must be human ...
Continuous Variation in the Phenotype
Continuous Variation• Think of more examples of Continuous  Variation
Try it yourself
Ratio
Wheat Color, Eye Color• How many genotypes and phenotype of two  genes with two alleles will be possible?• 9!
Upcoming SlideShare
Loading in …5
×

4-Genetics AHL - polygene (by Peter)

1,989 views

Published on

Published in: Technology, Health & Medicine
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,989
On SlideShare
0
From Embeds
0
Number of Embeds
5
Actions
Shares
0
Downloads
50
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

4-Genetics AHL - polygene (by Peter)

  1. 1. Polygenic Inheritance Peter Baek
  2. 2. Assessment Statements• 10.3.1• Define polygenic inheritance.• 10.3.2• Explain that polygenic inheritance can contribute to continuous variation using two examples, one of which must be human skin colour.
  3. 3. Define polygenic inheritance.• A single characteristic controlled by multiple genes• polygenic inheritance gives continuous variations in the phenotype
  4. 4. Explain that polygenic inheritance can contribute to continuous variation using two examples, one of which must be human skin colour.• - Skin color is determined by the concentration of melanin. The darker the skin the greater protection from the sun.• Skin color is controlled by four separate genes each with different alleles.
  5. 5. Explain that polygenic inheritance can contribute to continuous variation using two examples, one of which must be human skin colour.• Two allelesContributing- Add to the phenotypeNon-Contributing- do not add to the phenotypeIf genes are assumed that they are not linked
  6. 6. Continuous Variation in the Phenotype
  7. 7. Continuous Variation• Think of more examples of Continuous Variation
  8. 8. Try it yourself
  9. 9. Ratio
  10. 10. Wheat Color, Eye Color• How many genotypes and phenotype of two genes with two alleles will be possible?• 9!

×