A QUICK SWITCH - Mrs. Hall's Science Class BRMS - Home
A QUICK SWITCH
In the maternity ward, Mrs. Bright and Mrs. Light shared a room. When they were ready to go home, Mrs. Bright insisted that she had been given the wrong baby! The babies looked very much alike, & unfortunately, no one could find a record of the babies’ footprints. Hospital officials told Mrs. Bright she was mistaken and sent her and the baby home. Mrs. Bright eventually asked the hospital to perform identification tests. Several weeks later, blood tests showed the following data:
| |Blood Type | |Blood Type |
|Mrs. Bright |Group AB |Mrs. Light |Group A |
|Mr. Bright |Group O |Mr. Light |Group A |
|Baby @ Brights’ House |Group O |Baby @ Lights’ House |Group A |
1. What is Mrs. Brights’ PHENOTYPE? __________
a. What possible GENOTYPES can Mrs. Bright have? _____________________________________
2. What is Mr. Brights’ PHENOTYPE? __________
a. What possible GENOTYPES can Mr. Bright have? _____________________________________
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3. Use the Punnett Square to show the possible Blood GENOTYPES of a child born to the Bright’s.
4. What is Mrs. Light’s PHENOTYPE? __________
a. What possible GENOTYPES can Mrs. Light have? 1)__________ 2)__________
5. What is Mr. Light’s PHENOTYPE? __________
a. What possible GENOTYPES can Mrs. Light have? 1)__________ 2)__________
6. Using the Punnett Squares below, show the possible blood GENOTYPES of a child born to the Light’s.
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Conclusion Questions: (Answer questions 1, 3, & 4 in complete sentences)
1. Was there a mix-up of babies at the hospital? _______________________________________________
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2. List the combinations of GENOTYPES in the parents that would result in a child with Group A blood. For example 1) IAIA x IAIA 2) _________ 3. __________
3. If there was a mix-up at the hospital, what do you think should be done to prevent this from ever happening again?______________________________________________________________________________________________________________________________________________________________
4. What do you think should happen is a mix-up was discovered many years later when the children were older? _________________________________________________________________________________
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