Dentinogenesis imperfect, Dentinogenesis imperfecta is a | Homework Help

1) Dentinogenesis imperfecta is a tooth disorder involving the production of dentin sialophosphorprotein, a bone-like component of the protective miIDle layer of teeth. The trait is inherited as an autosomal (i.e. traits are inherited regardless of the sex) dominant allele located on chromosome 4 in humans and occurs in about 1 in 8000 people. Assume that a man withDentinogenesis imperfect, whose father had the disease but whose mother had normal teeth, married a woman with normal teeth. They have three children.

(a) Estimate the probability that their first child will be a male with Dentinogenesis imperfect? (b) What is the probability that two of his children will have the disease?

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2) The seeds in bush bean pods are each the product of an independent fertilization event. Green seed color is dominant to white seed color in bush beans. If a heterozygous plant with green seeds self- fertilizes, what is the probability that 4 seeds in a single pod of the progeny plant will consist of

(a) 2 green and 2 white seeds? (b) all green seeds?
(c) at least 1 white seeds?


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