How are seaweeds different from land plants
1 answer:
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2. Answer: a. Resulting phenotypes: 100% Yellow.
b. No, there are not blue kernels.
c. All kernels are yellow because the yellow allele (Y) is
dominant over blue allele (y).
Explanation: Crosses a (YY x Yy) and b (YY x yy) result in yellow offspring with genotypes: 1) Dominant homozygote (YY) and 2) Heterozygous (Yy).
4. Answer: a. Genotypes: YY (25%) , Yy (50%) and yy (25%).
b. Phenotypes: Yellow (75%) and blue (25%).
c. There are more blue kernels in the F2 than in the F1.
Explanation: Crosses between F1 members (Yy x Yy) result in yellow and blue offspring with genotypes: 1) Dominant homozygote (YY, 25%) 2) Heterozygous (Yy, 50%) and 3) Recessive homozygote (yy, 25%).
5. Answer: a. Ys and YS
b. YS, yS, Ys, ys.
Explanation: The yellow and smooth individuals with genotype (YYSs) can produce two different gametes: Ys (Yellow and wrinkled) and YS (Yellow and smooth). The yellow and smooth individuals with genotype (YySs) can produce four different gametes: YS (yellow ans smooth), yS (Blue and smooth), Ys (Yellow and wrinkled) and ys (Blue and wrinkled).
