Question

Key: Red – RR, Rr White- rr a. Parents genotypes: x b. Punnett square c. Genotypes: _________ d. Genotype ratio: _ e. Phenotypes: f. Phenotype ratio: ________ 2. In pea plants, round seeds (S) are dominant to wrinkle seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what fraction of the offspring should have spherical seeds? Show all work in the same format listed above for #1 ( key and a-f) 3. In Curcubita, white fruit color (W) is dominant over yellow fruit color (w). If a Curcubita plant homozygous for white is crossed with a plant homozygous for yellow, what will the phenotypic and genotypic ratios of the F2 generation. ( see powerpoint on how to solve f2 generation) Show all work. 4. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous recessive. How would the offspring appear? 5. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous dominant. How would the offspring appear? Show all work. 6. In humans, a widows peak hairline is dominant to straight hair line. Cross a hybrid widows peak hairline person to a pure straight hairline person. Show all work

          Key: Red – RR, Rr
White- rr
a. Parents genotypes:
__________ x __________
b. Punnett square
c. Genotypes: _____________________________
d. Genotype ratio: _________________________
e. Phenotypes: ____________________________
f. Phenotype ratio: ________________________
2. In pea plants, round seeds (S) are dominant to wrinkle seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what fraction of the offspring should have spherical seeds? Show all work in the same format listed above for #1 ( key and a-f)
3. In Curcubita, white fruit color (W) is dominant over yellow fruit color (w). If a Curcubita plant homozygous for white is crossed with a plant homozygous for yellow, what will the phenotypic and genotypic ratios of the F2 generation. ( see powerpoint on how to solve f2 generation) Show all work.
4. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous recessive. How would the offspring appear?
5. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous dominant. How would the offspring appear? Show all work.
6. In humans, a widows peak hairline is dominant to straight hair line. Cross a hybrid widows peak hairline person to a pure straight hairline person. Show all work

$Key: Red – RR, Rr White- rr a. Parents genotypes: x b. Punnett square c. Genotypes: d. Genotype ratio: e. Phenotypes: f. Phenotype ratio: 2. In pea plants, round seeds (S) are dominant to wrinkle seeds (s). In a genetic cross of two plants that are heterozygous for the seed shape trait, what fraction of the offspring should have spherical seeds? Show all work in the same format listed above for #1 ( key and a-f) 3. In Curcubita, white fruit color (W) is dominant over yellow fruit color (w). If a Curcubita plant homozygous for white is crossed with a plant homozygous for yellow, what will the phenotypic and genotypic ratios of the F2 generation. ( see powerpoint on how to solve f2 generation) Show all work. 4. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous recessive. How would the offspring appear? 5. Black fur is dominant over grey fur. If the mother is homozygous dominant and the father is heterozygous dominant. How would the offspring appear? Show all work. 6. In humans, a widows peak hairline is dominant to straight hair line. Cross a hybrid widows peak hairline person to a pure straight hairline person. Show all work$

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