BIO 3303 Genetics problems B His child has type A blood. What type of blood 1. J
ID: 190726 • Letter: B
Question
BIO 3303 Genetics problems B His child has type A blood. What type of blood 1. John has tyoe O blood. could his mother have? Draw Punnett squares. 2. Marfan's syndrome is caused by an autosomal dominant allele. What are syndrome if one of the chances of having a child that will develop Marfan's the parents has Marfan's syndrome. "President Lincoln may have h Marfan's) 3. The allele for green skin color (in frogs) is 2 and the allele for yellow color is .8. What would the probabilites, phenotypes, and genotypes of all offspring from two heterozygotes? Brown skin is dominant over yellow in snake skin. Smooth scales are dominant over rough scales. Show a Punnett square that would show all genotypes and probabilities of a cross between a yellow smooth skinned snake d and a brown rough skinned snake. 5. In the question above how would you know whether the offspring were heterozygotes or true breeding for dominant traits? Hemophilia is a recessive sex-linked trait. Show through Punnett squares how and why females were carriers of this disorder but did not get it. Show how, since the availability of artificial clotting factor, females may now get hemophilia. 6. s between an green round melon (heterozygote) and an green round melon (homozygote for the green allele and heterozygous for the shape allele). (The other shape is square). Draw the Punnett square which would show your possibilities. List all genotypes and ratios, and all phenotypes and ratios. Make sure that you reduce any fractions Show Punnett squares for incomplete dominance in which a purple flower is 8. crossed with a yellow flower, and all lavender flowers result. Draw Punnett squares that depict results of crosses between these lavendar flowers. (F2 generation) and ratios, percentages, fractions, and decimals. 9. Give an explanation of the trait below. 10. Give an explanation of the pedigree below. TDExplanation / Answer
1. John has type O blood, meaning his genotype must be OO. His child has type A blood, meaning he must have gotten the allele for A type blood from his mother. Till now, we know that the mother has a genotype of A_ , where _ represents the unknown allele. If a Punnett square is drawn between the parents,
We see that as long as the mother has an A allele, the other allele could be either A, B or O. Therefore, the mother's possible blood groups are A (AA, AO) and AB (AB).
O O A AO AO _ _O _ORelated Questions
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