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GENETIC PRACTICE PROBLEMS

GENETIC PRACTICE PROBLEMS. Complete Dominance. In dogs, wire-haired is dominant over, smooth-haired. What are the possible genotype(s) for wire haired? What are the possible genotype(s) for smooth haired. Complete Dominance.

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GENETIC PRACTICE PROBLEMS

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  1. GENETIC PRACTICEPROBLEMS

  2. Complete Dominance • In dogs, wire-haired is dominant over, smooth-haired. • What are the possible genotype(s) for wire haired? • What are the possible genotype(s) for smooth haired

  3. Complete Dominance If a homozygous wire-haired dog is mated with a smooth-haired dog, what type of offspring could be produced.

  4. Complete Dominance W W wWwWw Phenotype: all wire-haired wWwWw Genotype: all heterozygous

  5. Incomplete Dominance • In snapdragons, red flower (R) color is incompletely dominant over white flower (r) color. • What is the genotype for red flowers? • What is the genotype for pink flowers • What is the genotype for white flowers

  6. Incomplete Dominance If two pink flowers are crossed, what type of offspring could be produced.

  7. Incomplete Dominance R r RRR RrF2generation rRrrr phenotypes: 1:2:1 ratio genotypes: 1:2:1 ratio

  8. Incomplete Dominance What are the chances of producing a red flower when a red-flowered plant is crossed with a pink-flowered plant?

  9. Incomplete Dominance R R RRR RR r Rr Rr 50%:red flowered

  10. Incomplete Dominance • What kind of offspring is/are produced if a pink-flowered plant is crossed with a white-flowered plant?

  11. Incomplete Dominance R r rRrrr rRrrr 50%:white flowered 50%:pink flowered

  12. Codominance—Blood Types • A film star, who wishes to remain anonymous, was involved in a paternity case. The woman bringing suit had two children, whose blood types are A and the other has blood type B. • The mother’s blood type is Oand the potential father’s blood type is AB! • Should the judge in the case awarded damages to the woman? Base your answer upon the results from your Punnett square.

  13. Question #8A IA IB Answer iIAiIBi iIAiIBi

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