1 / 8

Complex Methods of Inheritance

Complex Methods of Inheritance. Incomplete Dominance. No gene is completely dominant resulting in a third phenotype. The third phenotype is usually a mixture of the dominant and recessive trait Example: Pink snap dragon. Codominance.

rafi
Download Presentation

Complex Methods of Inheritance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Complex Methods of Inheritance

  2. Incomplete Dominance • No gene is completely dominant resulting in a third phenotype. • The third phenotype is usually a mixture of the dominant and recessive trait • Example: Pink snap dragon

  3. Codominance • Both alleles are dominant, therefore both traits are visible resulting in a third, mixed phenotype • Example: Speckled Chicken

  4. Sex Linked • Alleles are found on either the X or Y chromosome. • Examples: Colorblindness, Ricketts, and Hemophillia in Humans • Calico cats • Eye color in fruit flies

  5. Multiple Alleles • One allele codes for more than one trait • Example Blood types

  6. Polygenic Inheritance • Expressed traits are carried more than one gene • Example: Hair color, Height, Skin Color

  7. Epistasis • The trait is influenced by other alleles • If a dominant B is present, then the mouse will be black unless there is a homzygous c then the mouse will be white. • Two homozygous recessive b’s with a dominant C trait yield a brown coated mouse.

More Related