oo Simple Mobile 4G 9:39 PM 599 roosevelt.blackboard.com 12. There are three all
ID: 61935 • Letter: O
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oo Simple Mobile 4G 9:39 PM 599 roosevelt.blackboard.com 12. There are three alleles (A, B, and O) that makeup the gene coding for the type of antigen found on a red bloocd cell and determines blood-type. However, there is another gene that codes for a different antigen that also occurs on the surface of our RBCs, and technically, that gene also has multiple alleles. However, most people either have or do not have one particular allele called the "d" allele. This gene codes for an antigen that is called "Rh factor because it was first discovered in Rhesus monkeys. People who have instructions to "make d antigen" are referred to as Rh+ (the allele is often symbolized by the letter "R"), while those who do not have instructions to make this "d antigen" are called Rh-(the allele can be symbolized by "). A cross involving both the ABO gene and the Rh gene would therefore be a dihybrid cross. Ms. Saunders, Ms. Sanders, and Ms. Sandefer all entered the exact same hospital and gave birth to baby girls on the same day. All three babies were taken to the nursery to receive care there. Later, someone claimed that the hospital had mixed up the babies. It is your job as a hospital administrator to make sure that each pair of parents has the correct baby. In order to do so, you order blood typing to be done on all the parents and the babies. Here are the results (4.0 pts): PersonBlood Type Probable Possible Gametes (EgoSpem Phenotype Getype Mr Saunders B Ms Sanders Mr. Sanders O Ms. Sandefer A Baby A Baby B AB Baby C B For each parent, think about what possible genotype(s) could give that phenotype. There is more than one possible genotype, then which of the possible genotypes would give the most variation in terms of possible children? (Use A, B, O, R, r-remember this is a dihybrid cross). Fill these in the probable genotype column. Next, fill in for each parent what possible kinds of gametes each genotype can produce. Create a punnett square for each set of parents to determine what children they could produce. Who are the parents for each baby?Explanation / Answer
Baby A: A+B+
Baby B:
Baby C: B+
phenotype genotype male gametes female gametes A+ A+A-/A+A+/A+O+/A+O- A- or A+ orO+ orO- A- or A+ orO+ orO- A- A-A- /A-O- A- orO- A- orO- B+ B+B-/B+B+/B+O+/B+O- B- or B+ orO+ orO- B- or B+ orO+ orO- B- B-B-/B-O- B- orO- B- orO- O+ O+O+/O+O- O+ O+ AB- A-B- A- or B- B- or A- AB+ A+B+/A+B-/A-B+ A+ or B+ B+ or A+ O- O-O- O- O-Related Questions
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