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captaincanuck captaincanuck
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9 years ago
Multiple alleles, Incomplete dominance & Co-dominance

In a court case concerning a paternity dispute, each of two men claimed three children to be
his own. The blood groups of the men, the children, and their mother were as follows:
husband O first child O
lover AB second child A
wife A third child A
On the basis of this evidence can the paternity of the three children be established?

two gene cross
A GGHh individual mates with a ggHh individual. What proportion of their offspring would be expected to have the GgHh genotype?

any help would be great
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#1
Educator
9 years ago
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#2
Staff Member
9 years ago
Similar Question
In a court case concerning a paternity dispute, each of two men claimed three children to be his own. The blood groups of the men, the children and their mother were as follows:

Person   ABO group MN series   Rhesus factor

Husband O   M   Rh+
Lover   AB   MN   Rh-
Wife A   N   Rh+
First child   O   MN   Rh+
Second child   A   N   Rh+
Third child   A   MN   Rh-

The ABO and Rh types are no help here.

But, the husband cannot be the father of the 2nd child.
The husband is MM, and the 2nd child is NN.
Therefore the child's father contributed an N to that child,
but the husband does not have an N to contribute.

The other children could be from either man.
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