https://psu.instructure.com/courses/1930510/quizzes/3418269 Question3 0/1.5 pts

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https://psu.instructure.com/courses/1930510/quizzes/3418269 Question3 0/1.5 pts The allele for faulty enamel syndrome (which causes brittle teeth) Is dominant over the allele for normal teeth and this gene is located on the X chromosome. If a woman who s homozygous for faulty enamel has children with a man who does not have faulty enamel, what percentage of their daughters would be expected to show the phenotype of faulty enamel? 0100% 025% 075% 00% 050% Partial Question 4 0.75 /1.5 pts Choose all of the Inheritance patterns that would give you a phenotype ratios of 12:1 if you crossed two heterozygous individuals Partial Question 5 0.5/1.5 pts

Explanation / Answer

Q3

IF X^X^ * XY; then the offsprings are : X^X, X^Y, X^X, AND X^Y, since the trait Faculty enamel is dominant we see all the daughters are defective hence answer is 100 percent

Q4)

Aa * Aa = AA, Aa, Aa, aa,

If complete dominance then three phenotypes will be there and the ratio would be 1:2:1

If co-dominance then as well three phenotypes will be there with ration 1:2:1

But if complete dominance there would be just two phenotypes: AA,Aa, and Aa would look the same so the ration would be 3:1

hence the answer is incomplete and codominance

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