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Genetics Practice

Genetics Practice. Incomplete Dominance. In carnations, red and white phenotypes have homozygous genotypes. The heterozygous genotype makes a pink phenotype. Cross a red carnation with a pink carnation. What percent of the offspring will be pink?. Codominance.

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Genetics Practice

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  1. Genetics Practice

  2. Incomplete Dominance • In carnations, red and white phenotypes have homozygous genotypes. The heterozygous genotype makes a pink phenotype. Cross a red carnation with a pink carnation. What percent of the offspring will be pink?

  3. Codominance • In cattle, roan coat color (red and white hairs) occurs in heterozygotes. Cross a white cow with a roan cow.

  4. Sex-Linked • Colorblindness is a sex-linked recessive disorder. If a male that is color-blind marries a woman that is heterozygous, what are the possibilities for their offspring?

  5. If a man without colorblindness marries a woman that is heterozygous, what is the likelihood that their sons will be normal?

  6. Baldness is a sex-linked dominant condition. If a female who is not bald weds a man who is bald, what is the likelihood that they will produce a daughter that is not bald?

  7. Multiple Alleles • If a woman that is heterozygous type A blood weds a man who is heterozygous type B blood, what are the possible genotypes of their offspring?

  8. A couple has two children—one has type A blood and the other has type O blood. What are the possible genotypes of the couple?

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