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1. In a large, randomly mating herd of cattle, 16 percent of the newborn calves have a certain type of dwarfism due to a homozygous recessive allele. Assume the population is in Hardy~Weinberg equilibrium.a>What is the frequency of the recessive dwarfing allele?b> what is the frequency of the normal allele?c> what proportion of the normal cattle are homozygous?d> what is the frequency of the individuals with dwarfism?e> what is the frequency of carriers in the population?2. Phenylketonuria (PKU) is a recessive genetic disorder in metabolism that can lead to mental retardation and other health problems. Approximately 1 in 10000 babies are born with this disease.
a> What is the frequency of the PKU allele?b> what proportion of the population are PKU carriers?
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She crosses the two lines together (aab+b+ x a+a+bb) to create a heterozygote (a+ab+b). Two heterozygotes are crossed together to create an F2 population. What proportion of this population will be true-breeding double mutant?
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