CASE STUDY GIVEN THIS SCENARIO: Mr. and Mrs. Reyes died in a tragic accident when they went to a private island for a vacation. Authorities found that they have a lot of money in the bank and bought treasury bills in the stock market. The couple is known to have a son, from whom they are estranged. This man is the sole heir to the Reyes’ fortune. Five men showed up, each claiming to be the couple’s long-lost son who ran away after a misunderstanding with his father. You are called in as a genetics expert to decide who the rightful heir is. You will need to develop a Punnett square based on the genotype of the deceased to eliminate the imposters. A successful result will identify the true heir. Type A and Type B blood are codominant over Type O. Rh+blood is dominant over Rh-blood Hair texture exhibits incomplete dominance. Homozygous dominants (HH) have curly hair. Homozygous recessive (hh) have straight hair. Heterozygous (Hh) have wavy hair. Mr. Reyes Homozygous Type A blood, heterozygous Rh+, straight hair Mrs. Reyes Heterozygous Type B blood, homozygous Rh+, wavy hair Manuel Heterozygous Type A blood, heterozygous Rh+, wavy hair Oscar Heterozygous Type A blood, homozygous Rh+, wavy hair Ramon Type O blood, Rh- straight hair Which men can be eliminated? Justify your answers for each man.
CASE STUDY
GIVEN THIS SCENARIO:
Mr. and Mrs. Reyes died in a tragic accident when they went to a private island for a vacation. Authorities found that they have a lot of money in the bank and bought treasury bills in the stock market. The couple is known to have a son, from whom they are estranged. This man is the sole heir to the Reyes’ fortune. Five men showed up, each claiming to be the couple’s long-lost son who ran away after a misunderstanding with his father. You are called in as a genetics expert to decide who the rightful heir is. You will need to develop a Punnett square based on the genotype of the deceased to eliminate the imposters. A successful result will identify the true heir.
Type A and Type B blood are codominant over Type O.
Rh+blood is dominant over Rh-blood
Hair texture exhibits incomplete dominance. Homozygous dominants (HH) have curly hair. Homozygous recessive (hh) have straight hair. Heterozygous (Hh) have wavy hair.
| Mr. Reyes | Homozygous Type A blood, heterozygous Rh+, straight hair |
| Mrs. Reyes | Heterozygous Type B blood, homozygous Rh+, wavy hair |
| Manuel | Heterozygous Type A blood, heterozygous Rh+, wavy hair |
| Oscar | Heterozygous Type A blood, homozygous Rh+, wavy hair |
| Ramon |
Type O blood, Rh- straight hair |
Which men can be eliminated? Justify your answers for each man.
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