For each problem: 1. define the alleles and describe the dominance hierarchy - \
ID: 3165978 • Letter: F
Question
For each problem: 1. define the alleles and describe the dominance hierarchy - "define the alleles" means that you need to tell me what allele each letter that you're using represents. the "dominance hierarchy" tells me which allele is dominant, recessive, codominant, incompletely dominant, ete. - you should also tell me in this section if the gene is not autosomal - i.e. if it is sex-linked 2. write out the cross phenotypically 3. write out the cross genotypically 4. draw the Punnett square 5. the question will ask you to do one or more of the following: Don't repeat the same gamete from the same individual a. calculate the phenotypic ratio of the offspring This ratio should be in the least common denominators if you didn't repeat the same gamete from the same individual when doing the Punnett square b. calculate the genotypic ratio of the offspring This ratio should be in the least common denominators if you didn't repeat the same gamete from the same individual when doing the Punnett square c. determine some probability Questions are on the backExplanation / Answer
2. a woman needs two defective alleles to develop haemophilia as the gender has two X chromosome however a man only needs one diseased allele.'
If the father of the woman is haemophiliac then she would be a carrier since one of the two X chromosome is inherited from father and the father have only one defective allele. This makes the woman a carrier. The genotype of the woman is XXh . If she marries a man who is normal the genotype of the man is XY
Punett square:
X Xh
X XX XXh
Y XY XhY
The probabilty that ther son will be hamophiliac is 1/4
3. The probability will be 0 because the X in a son is inherited by the mother and in this case the mother is normal
4. if the woman is colorblind and the husband/father is normal then the probability for the daughter to be color blind is 0. the daughters will however be carrier of the defect
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