Hello! I need help, if you will, with unit 7 of my online course (ILC). I am really just looking to see if I am on the right track and when I try these questions on my own I want to confirm I have the right answer. It is really important that I fully understand the concept and do good on the final exam! Thanks for all your help!!!!!
Lesson 7:21. In humans, the recessive allele that causes a form of red-green colour blindness (c) is found on the X chromosome.
a) Determine the genotype and phenotypes of the F1 generation from a colour-blind father and a mother who is homozygous for normal colour vision.
b) Determine the genotypes and phenotypes of the F1 generation from a father who has normal colour vision and a mother who is heterozygous for colour vision.
c) Draw the possible Punnett squares to determine the genotypes of parents that could produce a daughter who is colour-blind.
22. Hypophosphatemia is a dominant genetic disorder caused by a deficiency of phosphates in the blood. Assuming the other parent is free of the disorder, males with the disorder will pass it on to all their daughters but not their sons. Females with the disorder will pass it on to approximately half their children.
a) Is this pattern of inheritance autosomal or sex-linked? Explain.
b) Draw Punnett squares to show the inheritance pattern of the disorder in each of the two scenarios.
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