unit 4 Workshi x Mechanisms o/ k elC atUGAxM unit 4 workshe Talat ?60?! C Secure
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unit 4 Workshi x Mechanisms o/ k elC atUGAxM unit 4 workshe Talat ?60?! C Secure https://docs.google :: Apps Yahoo Movies En Espn Ebay Online Checking A. -GPTC -GSU Unit 4 Worksheet Fie Edit View Insert Format Tools Add-ens Help Alchanges saved in Drive SHARE If individual IIL-9 had a child with a woman not carrying the trait, what would be the probability that the child would have the disease? d) 22)The pedigree at the right shows inheritance of a disease (shaded) controlled by a single gene with two alleles (A/a, or Xpx"). Filled symbols represent affected individuals. The disease is rare and individuals marrying into the family are unlikely to have a disease allele. a) What is the most likely mode of inheritance? Individual Genotype 11-2 L1l-4 11-7 whattatype(o) for the indwvidiuals shown in the chart at the right? c) Individual 11-4 has two children (one giri and one boy) with a man not carrying the trait. What would the probablity be that: 1) Their daughter has the disease? n) Their son has the disease? Biood TypeNumber 285 MacBExplanation / Answer
a) The most likely mode of inheritence is X-linked recessive.
b) II-1 XaY
II-2 XaX
III-4 XaXa
III-7 XaX
III-8 XY
In this case I have used Xa to represent the affected or disease allele and X and Y to represent the normal alleles.
c) i) The probability of their daughter having the disease will be 0% because she will get an affected allele from the mother but a normal allele from the father. Since it is a recessive disease, the daughter will not have the disease.
ii) The probability of their son having the disease is 100%. This is so because the son will get an affected X allele from the mother (the genotype of the mother is XaXa ) and a Y allele from the father.
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