1 / 3

How is gender determined?

How is gender determined?. Sex-linked traits. Sex Chromosomes. Females = XX Males = XY. Sex-linked Genes are on the X. Eye color is a sex linked trait in fruit flies; Red is dominant over white; show the cross of a heterozygous females and a recessive male

chaz
Télécharger la présentation

How is gender determined?

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. How is gender determined? Sex-linked traits

  2. Sex Chromosomes • Females = XX • Males = XY

  3. Sex-linked Genes are on the X • Eye color is a sex linked trait in fruit flies; Red is dominant over white; show the cross of a heterozygous females and a recessive male • Define alleles: XR = red; Xr = white • Show parents: XRXr x XrY • Do the punnet square: • GR: 1XRXr: 1XrXr: 1XRY:1XrY • PR: 1 red female: 1 white female: 1 red male: 1 white male

More Related