6. Palomino is a golden yellow color in heterozygous horses. Pure breeding (homo

Question

6. Palomino is a golden yellow color in heterozygous horses. Pure breeding (homozygous) animals are either chesnut brown or pale cream colored. A. If two palomino horses are bred, what proportion of offspring will also be palomino-colored? B. What horses would one breed if one desired 100% palominos? 7. In humans, LDL receptors on red blood cells allow the cells to bind to lipids like cholesterol. When these cholesterol builds in the bloodstream, increasing risk of heart attack, stroke, and high blood pressure. Individuals with normal LDL receptors are homozygous. Individuals with hypercholesterolemia are either mild (heterozygous) or severe (homozygous for no receptors) ptors are missing, A. If a person with normal LDL receptors has children with a person with mild hypercholesterolemia, what % of their children would have the disease, and with what severity? B. If two people with mild hypercholesterolemia had 8 t children, how many would you expect for each of the three phenotypes (normal, mild, severe)? otal IV Multiple Alleles and Codominance 8. A man has type AB blood and his wife has type A blood. A. What are their possible genotypes? B. The woman gives birth to a child with type O blood. What is his genotype? C. Is the husband the father of the baby, or does he need a good attorney? 9. A man with type A blood marries a woman with type B blood. They have four children, each with a different blood type. What are the genotypes of both parents and all four kids?

Explanation / Answer

(6)

Chestnut brown=BB

Pale cream colored=CC

Palomino Golden Yellow= BC

(A)

BC x BC

BB, BC, BC, CC

50% are palomino golden yellow, 25% are Chestnut brown, and 25% are Pale cream colored.

(B)

If one desired 100% of the palomino horses, he need homozygous chestnut brown and homozygous pale cream colored horses.

BB x CC = All BC

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