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For many generations, the following genotypic frequencies were observed in a large population of dinosaurs: 4 percent AA, 32 percent Aa, and 64 percent aa. The climate changed abruptly and resulted in the death of all homozygous recessive dinosaurs (s = 1). In the next generation, the recessive homozygotes died shortly after birth. What percentage of these newborn dinosaurs died?
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A) 4% B) 8.5% C) 19.7% D) 36.8% E) 44%
If D is a dominant allele for the Rh factor, what will be the genotypic ratio for a monohybrid heterozygous cross of (Dd x Dd)? What will the phenotypic ratio be?
If these three genes were all assorting independently, how many genotypic and phenotypic classes would result in the offspring, and in what proportion, suppose simple dominance and recessiveness in each gene pair?
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