May i have a help on number 3 only, please. A Vulcan can has pointed ears and a

Question

May i have a help on number 3 only, please.

A Vulcan can has pointed ears and a heart located on the right side of the chest Mr. Spock has both of these traits. Vulcans and Earthlings have many genes in common, including the genes for ear shape and heart location, each of which has two alleles. Mr. Spock married an Earth woman and they had many children. About half of the children have pointed ears and hearts on the right side, like Spock, and about half have rounded ears and hearts on the left side, like their mother. Explain the inheritance pattern for ear shape and heart location. 3. In Klingons, one gene determines hair texture and another gene determines whether the individual will have a sagittal crest (a prominent forehead protrusion). The two genes are not linked. The allele for curly Klingon hair (K) is dominant to the allele for silky Earthling hair (k). The allele for a sagittal crest (S) is dominant to the allele for a smooth forehead (s). Kayless is half-human, half-Klingon with the genotype KkSs. He mates with Sara, also a heterozyote for both genes. If they had 16 children, what would be the expected phenotypes? Two mothers give birth to sons at the same time in a busy hospital. The son of couple 1 is afflicted with hemophilia A, which is a recessive sex-linked disease. Neither parent has the disease. Couple 2 has a normal son even though the father has hemophilia A. The two couples sue the hospital in claiming that a careless staff member switched the babies at birth. You appear in court as an expert witness for the hospital. You explain that

Explanation / Answer

Since the two genes are not linked, all the genotypes are expressed in F1 in the case of Klingon as KkSs

(Klingon) KkSs X (Kayless) KkSs

9/16: phenotypic Curly Klingon hair / Sagittal crest
3/16: phenotypic Curly Klingon hair / Smooth forehead
3/16: phenotypic Silky earthling hair / Sagittal crest
1/16: phenotypic Silky earthling hair / Smooth forehead

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