1 / 8

Mendelian Genetics Thursday 10 /17/13

Mendelian Genetics Thursday 10 /17/13. Quiz #3 Mendel’s Laws Law of Independent Assortment genetics problems with two characters beyond Mendel X-linked Polygenic inheritance Incomplete Dominance Co-Dominance / Multiple Alleles Environmental influence.

yin
Download Presentation

Mendelian Genetics Thursday 10 /17/13

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. Mendelian Genetics Thursday 10/17/13 • Quiz #3 • Mendel’s Laws • Law of Independent Assortment • genetics problems with two characters • beyond Mendel • X-linked • Polygenic inheritance • Incomplete Dominance • Co-Dominance / Multiple Alleles • Environmental influence

  2. Sex-linked Genes (X-linked genes) • genes that are found on the X chromosome

  3. Polygenic inheritance: ex: skin color, height, eye color Genotypes Phenotypes

  4. Incomplete Dominance: • dominant allele • heterozygous individuals show

  5. Incomplete Dominance: • what happens if we cross two heterozygous individuals? see figure 23.13 for another example

  6. Multiple Alleles • individuals are diploid • more Co-Dominance: see fig 23.15 Can a woman with type A blood have a type O daughter?

  7. Gene Interact with the Environment to Produce a Phenotype: • environmental conditions • e.g., Siamese Cats - the black tail, paws and ears are the result of temperature impact on an enzyme • Nature vs. Nurture: • even when there is a strong genetic component,

  8. Colorblindness is a recessive X-linked trait. Individuals express the trait (colorblindness) if they do not have at least one copy of the dominant allele. If mom and dad are NOT colorblind, but have a son who IS colorblind, what are the genotypes of the parents? If mom is a carrier and dad is NOT colorblind, what is the probability that they will have a son who is colorblind? a. 0% b. 25% c. 50% d. 75% e. 100% Can they have a daughter who is colorblind? a. yes b. no

More Related