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Punnett Square Examples

Monohybrid. A dog breeder wants to breed his collie if possible. His dog can hear (dom) can hear so he knows the genotype must be ______ or ______. If his collie, Patches, is Dd, he doesn't want to breed him so he won't pass the deafness gene on. a) Show a test-cross with a dd female to show th

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Punnett Square Examples

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    1. Punnett Square Examples

    2. Monohybrid A dog breeder wants to breed his collie if possible. His dog can hear (dom) can hear so he knows the genotype must be ______ or ______. If his collie, Patches, is Dd, he doesn’t want to breed him so he won’t pass the deafness gene on. a) Show a test-cross with a dd female to show the 2 possible crosses. What are the geno/phenotypes. B)What is the probability of having deaf puppies?

    4. Old Mother Hubbard has 4 kids. She’s blue eyed and her husband is brown eyed (dominant). What is the probability that each child will have blue eyes? Show possible crosses and resulting genotypes/phenotypes.

    6. 1. Sharon wants to breed her Yorkshire terrier because he’s ridiculously cute. In Yorkies, ears up is dominant (E) and floppy ears is recessive (e). Also, short tails are dominant (T) over long (t). If Sharon’s dog Petie,a TRUE breeding ears up, short tail, breeds with a female eeTt, what are the possible geno/phenotypes and their ratios?

    8. 2. In house-elves, floppy ears are dominant to pointy ears. Also, tomato shaped noses are dominant to long, pointy noses. What are the possible geno/phenotype results if a pure floppy ear, pointy nose elf has baby elves with a heterozygous floppy ear, tomato nose?

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