Punnett Practice. 2 Genetic Practice Problems copyright cmassengale.

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Presentation transcript:

Punnett Practice

2 Genetic Practice Problems copyright cmassengale

3 Breed the P 1 generation tall (TT) x dwarf (tt) pea plants tall (TT) x dwarf (tt) pea plants T T tt copyright cmassengale

4 Solution: T T tt Tt All Tt = tall (heterozygous tall) produces the F 1 generation tall (TT) vs. dwarf (tt) pea plants copyright cmassengale

5 Breed the F 1 generation tall (Tt) vs. tall (Tt) pea plants tall (Tt) vs. tall (Tt) pea plants T t Tt copyright cmassengale

6 Solution: TT Tt tt T t Tt produces the F 2 generation 1/4 (25%) = TT 1/2 (50%) = Tt 1/4 (25%) = tt 1:2:1 genotype 3:1 phenotype 3:1 phenotype tall (Tt) x tall (Tt) pea plants copyright cmassengale

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