1. Martha has type AB blood and is married to Richard who has type B blood. Richard's mother has type O blood. a. List the genotypes for: Martha, Richard and Richard's mother b. Show the punnett square crossing Martha & Richard. c. Determine the possible blood types of the offspring?

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### Genetics of Blood Types - Educational Outline

1. **Scenario:**
   - Martha has type AB blood and is married to Richard who has type B blood. Richard's mother has type O blood.

2. **Questions:**
   - **a. List the genotypes for:**
     - Martha: AB
     - Richard: BO (since his mother is OO and he has a B allele, he must have inherited an O allele from his mother)
     - Richard’s mother: OO
   
   - **b. Show the Punnett square crossing Martha & Richard:**
   
     The Punnett square involves Martha (AB) and Richard (BO).

     ```
         A     B
       _________________
     B |  AB  | BB  |
       ----------------
     O |  AO   | BO |
     ```

     **Explanation:**
     - An allele from Martha can either be A or B.
     - An allele from Richard can either be B or O.
     - The combinations in the Punnett square show the possible genotypes of their offspring.

   - **c. Determine the possible blood types of the offspring:**
     - AB (from A and B combination)
     - BB (from B and B combination, which is type B blood)
     - AO (from A and O combination, which is type A blood)
     - BO (from B and O combination, which is type B blood)

     Therefore, the possible blood types for the offspring are:
     - Type A
     - Type B
     - Type AB

### Summary
By using the genotypes of the parents (Martha and Richard) and the Punnett square, we can predict that their offspring may have blood types A, B, or AB.
Transcribed Image Text:### Genetics of Blood Types - Educational Outline 1. **Scenario:** - Martha has type AB blood and is married to Richard who has type B blood. Richard's mother has type O blood. 2. **Questions:** - **a. List the genotypes for:** - Martha: AB - Richard: BO (since his mother is OO and he has a B allele, he must have inherited an O allele from his mother) - Richard’s mother: OO - **b. Show the Punnett square crossing Martha & Richard:** The Punnett square involves Martha (AB) and Richard (BO). ``` A B _________________ B | AB | BB | ---------------- O | AO | BO | ``` **Explanation:** - An allele from Martha can either be A or B. - An allele from Richard can either be B or O. - The combinations in the Punnett square show the possible genotypes of their offspring. - **c. Determine the possible blood types of the offspring:** - AB (from A and B combination) - BB (from B and B combination, which is type B blood) - AO (from A and O combination, which is type A blood) - BO (from B and O combination, which is type B blood) Therefore, the possible blood types for the offspring are: - Type A - Type B - Type AB ### Summary By using the genotypes of the parents (Martha and Richard) and the Punnett square, we can predict that their offspring may have blood types A, B, or AB.
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