1 / 7

Multiple Alleles

Multiple Alleles. Multiple Alleles. Some traits have more than two alleles (eg. ABO Blood types) Mendel worked on peas with only 2 alleles, 1 dominated the other. Fruit Fly Eye Colour. Drosophila (fruit flies) have multiple alleles for different eye colours

cameo
Download Presentation

Multiple Alleles

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. Multiple Alleles

  2. Multiple Alleles • Some traits have more than two alleles (eg. ABO Blood types) • Mendel worked on peas with only 2 alleles, 1 dominated the other

  3. Fruit Fly Eye Colour • Drosophila (fruit flies) have multiple alleles for different eye colours • Red (wild type) is dominant, and most common • Others include apricot, honey, white • Flies can have only 2 different genes @ 1 time but more than 2 alleles are possible • Fruit fly may have an allele for w.t. eyes and 1 for white eyes • A mate may have an allele for apricot eyes and 1 for honey eyes

  4. Fruit Fly Eye Color • Wild type is dominant to apricot, is dominant to honey, is dominant to white • You no longer use upper and lower case letters, instead, capital letters and superscript numbers • Wild type = E1E1 , E1E2 , E1E3, E1E4 • Apricot = E2E2 , E2E3 , E2E4 • Honey = E3E3 E3E4 • White = E4E4

  5. What would be the result of a cross between E1E4 (wild type) and E2E3 (apricot) E1 E4 E2 E1E2 E2E4 E3 E1E3 E3E4

  6. Coat color in rabbits is controlled by a series of four alleles. The alleles arranged in order of their dominance are: Cch = chinchilla Ch = Himalayan C+ = agouti c = albino

  7. Rabbits Predict for the following crosses the phenotypes of the progeny (offspring) and their expected proportions: a) Agouti (C+Cch) x Himalayan(Chc) b) Agouti (C+c) x Chinchilla (CchCh)

More Related