In a paternity case, a woman (blood type O) claims a man (type A) whose mother is O to be the father of her child. Is there any possibility the woman is correct? If so, show the genotypes of the people involved and a likely cross to produce a child with blood type O.

Yes, the mother's claim might be correct.

Please find the genotype of the parents and the cross below

Explanation:

Blood group in humans is controlled by three alleles namely; iA, iB, and i. Alleles iA and iB are dominant over allele i but co-dominant when together i.e. iAiB

Based on this, below are the blood types of an individual with the possible genotype;

Blood type A - iAiA or iAi

Blood type B - iBiB or iBi

Blood type AB - iAiB

Blood type O - ii

According to this question involving a paternity case, a woman with blood type O claims a man with blood type A whose mother is type O to be the father of her child. The woman has a genotype 'ii' while the man has a heterozygous genotype 'iAi' because his mother will contribute the 'i' allele.

Hence, using the genotype of the woman (ii) and man (iAi) in a cross as follows; ii × iAi (see attached image for punnet square), the following proportion of offsprings will likely be produced:

(2) iAi - blood type A

(2) ii - blood type O

Therefore, the woman's claim that the man is the father of her child with blood type O (ii) is most likely correct.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )