1 / 9

Set up Cornell Notes on pg. 75 Topic: 7.2 Patterns of Inheritance Essential Questions :

7.2 Patterns of Inheritance. 2.1 Atoms, Ions, and Molecules. Set up Cornell Notes on pg. 75 Topic: 7.2 Patterns of Inheritance Essential Questions : Why might polygenic traits vary more in phenotype than do single-gene traits?

bonita
Download Presentation

Set up Cornell Notes on pg. 75 Topic: 7.2 Patterns of Inheritance Essential Questions :

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. 7.2 Patterns of Inheritance 2.1 Atoms, Ions, and Molecules Set up Cornell Notes on pg. 75 • Topic: 7.2 Patterns of Inheritance • Essential Questions: • Why might polygenic traits vary more in phenotype than do single-gene traits? • How is codominance the same as having no dominant and recessive relationship at all between 2 alleles? • Why might polygenic traits vary more in phenotype than do single-gene traits? • How is codominance the same as having no dominant and recessive relationship at all between 2 alleles? KEY CONCEPT Phenotype is affected by many different factors.

  2. KEY CONCEPT Phenotype is affected by many different factors.

  3. + • What are our possible outcomes for this combination of flower color? • What if red nor white was dominant or recessive to one another?

  4. In incomplete dominance, neither allele is completely dominant nor completely recessive. • They are a BLEND of each other • Ex: red+white rose= pink rose BB RR BR

  5. B B BR BR R BR BR R Genotype: Phenotype: BR 100% pink flowers

  6. B R BB Red rose BR Pink rose B BR Pink rose R RR White rose Genotype: BB= red RR= white BR= pink Phenotype: 25%= red flowers 50%= pink flowers 25%= white flowers

  7. Codominant alleles are neither dominant nor recessive. • Codominant alleles will both be completely expressed. Ex: multi-colored red and white rose

  8. B B BR BR R BR BR R Genotype: Phenotype: BR 100% red and white flowers

  9. Polygenic traits are produced by two or more genes. • Can produce a continuous range of colors Ex: Skin color- 4 genes Eye color- at least 3 genes

More Related