7. In a type A blood, the child has type O, and the alleged father has type B bl

Question

7. In a type A blood, the child has type O, and the alleged father has type B blood. How would you respond to the following statements? case of disputed paternity you, as the expert witness, were told the mother has a. The attorney for the alleged father asks "since the mother has type A blood, the type O blood of the child must have come from the father, and since my client has type B blood, he obviously could not have fathered the child." b. Her attorney states, "Further tests reveal that this man is heterozygous and therefore, he must be the father." 8. The dominant allele K is necessary to hear. However, the dominant allele M of another independent gene always results in deafness no matter what other genes are present. Parents who have the genotypes kk Mm x Kk Mm have a child. What are the chances that the child will be able to hear?

Explanation / Answer

Answer:

a).

The client with type B blood may be the chance to be as father. Because, type O blood consists of geneotype, ii, and mother was heterozygous for type A(IAi). If the father is heterozygous for type B (IB i), then both parents can contribute “i” allele to be type O blood of the child. So there is a chance of the client to be as father.

b).

Yes, the client is the father of the child. See the below punnet checker board.

Mother (IB i) x Father (IA i)---Parents

IA

i

IB

IAIB (type AB)

IBi (type B)

i

IAi(type A)

ii (type O)

c).

kk Mm x Kk Mm—Parents

KM

Km

kM

km

kM

KkMM (deaf)

KkMm (deaf)

kkMM (deaf)

kkMm (deaf)

km

KkMm (deaf)

Kkmm (hear)

kkMm (deaf)

kkmm (deaf)

The chance that the child will be able to hear = 1/8

IA

i

IB

IAIB (type AB)

IBi (type B)

i

IAi(type A)

ii (type O)

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