<p>Picture this sceneario:<br />The identity of Kim&#8217;s biological father is

Question

<p>Picture this sceneario:<br />The identity of Kim&#8217;s biological father is unknown, but it is thought to be either Kevin or Thomas. To determine which of the two men it is, blood typing of all the persons involved was performed. Here are the results of the blood tests, including the phenotypes and possible genotypes of each person:<br />&#8226;Rachel (mother) &#8211; Type AB; genotype IA, IB<br />&#8226;Kim (child) &#8211; Type A; genotype is either IA, IA (if homozygous) or IA, i (if heterozygous).<br />&#8226;Kevin (Alleged Father #1) &#8211; Type A; genotype is either IA,IA if homozygous, or IA,i if heterozygous.<br />&#8226;Thomas (Alleged Father #2) &#8211; Type O; genotype is ii.<br />QUESTION:</p>
<p>which alleged father can be definitevely ruled out as the child's father?</p>

Explanation / Answer

which alleged father can be definitevely ruled out as the child's father

Rachel (mother)

FATHER 1

OFFSPRINGS

IA

IA

IA

IA,IA

IB

i

i

IB,IO

Rachel (mother)

FATHER 2

OFFSPRINGS

IA

I IA

I IA

I IA

IB

i IB

i IB

I,IB

IT IS NOT ISOLATE ALLEGED FATHER WITH BLOOD GROUPING,

SO DNA PROFILING IS NECESSARY TO definitevely ruled out as the child's father

Rachel (mother)

FATHER 1

OFFSPRINGS

IA

IA

IA

IA,IA

IB

i

i

IB,IO

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