1 / 10

Dominance of Traits

Dominance of Traits. Chelsea Denhard. Basic Terms. Trait: a specific characteristic (color, hair, etc .) Heterozygous: two different alleles; one dominant, one recessive Homozygous: two alleles that are the same; homozygous dominant or recessive

sally
Télécharger la présentation

Dominance of Traits

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. Dominance of Traits Chelsea Denhard

  2. Basic Terms • Trait: a specific characteristic (color, hair, etc.) • Heterozygous: two different alleles; one dominant, one recessive • Homozygous: two alleles that are the same; homozygous dominant or recessive • Hybrid: offspring of crosses between parents with different traits • Incomplete Dominance: when an allele isn’t completely dominant over another • Codominance: when both alleles are seen

  3. Incomplete Dominance • Even with purebred dogs, incomplete dominance is shown, as seen in the next slide, when one trait, in this case color, isn’t completely dominant.

  4. & You can see incomplete dominance here. Kinzel and Ivan’s puppies aren’t one specific color. The traits aren’t completely dominant.

  5. Hybrids • If a dog isn’t a purebred it’s a hybrid. A Shih-tzu bred with a Yorkie will produce Shorkies, a hybrid. Also, a Poodle and a Yorkie will give you a YorkiePoo. Shorkie (Shih Tzu mom, Yorkie dad) YorkiePoo (Poodle mom, Yorkie dad)

  6. Codominance • Looking at hybrids, we can see codominance. Both parents’ genes can be seen. Lily, a Chihuahua/Poodle mix Poodle Traits Chihuahua Traits • Hair: She has coarse hair that doesn’t have to be groomed very often • Ears: She has Chihuahua ears that stick up when she’s excited • Face: She has the poodle face, with a long-ish nose and large eyes • Body: She has the poodle build

  7. Codominance Chloe, a Shih Tzu/Pomeranian mix Shih Tzu Traits Pomeranian Traits • Face: Her face has a “squished in” appearance, which is the Shih Tzu face • Tail: Her tail curves up, like the Shih Tzu • Build: She has the stocky, short Shih Tzu build • Hair: She has fluffy hair, like a Pomeranian • Ears: Her ears are floppy and large, like Pomeranians

  8. Dominant Traits in Yorkies http://www.yorkietalk.com/forums/breeder-talk/191831-recessive-yorkie.html

  9. Dominant Traits in Chihuahuas • http://www.prouxchihuahuas.com/id61.html With two heterozygous parents, three puppies will have short hair. With one heterozygous parent, and one homozygous recessive, two puppies will have short hair.

  10. Works Cited • All pictures: Dogz by Design • www.dogzbydesign.com • If you ever want to buy small house dog, let us know! • Prentice Hall: Biology science book • http://www.yorkietalk.com/forums/breeder-talk/191831-recessive-yorkie.html • http://www.prouxchihuahuas.com/id61.html

More Related