Pedigree Analysis 1. Do we expect a son/daughter to have a trait if the trait is

Question

Pedigree Analysis

1. Do we expect a son/daughter to have a trait if the trait is inherited in the following way (for each, please answer Y/N/P/W for yes, no, possibly, or 'what!? - that doesn't make sense!!'). Please fill out the grid for each type of inheritance. For example, a X-linked dominant female-limited trait would look like this: Daughter Son Mom has trait Dad has trait Both have trait Neither have trait N Note that the 'W's are because in these problems the father has a female-limited trait, which is impossible, by definition. Please make one grid each for: Y-linked inheritance Mitochondrial inheritance Autosomal dominant Autosomal recessive X-linked recessive X-linked male-limited Imprinting Polygenic

Explanation / Answer

Following are the 8 grids showing inheritance patterns in sons and daughters, upon presence/absence of traits in mothers and fathers.

(1) Y-linked inheritance

2.Mitochondrial inheritance

3. Autosomal dominant

4. Autosomal recessive

5. X-linked recessive

6. X-linked male limited

7. Imprinting

8. Polygenic

Son Daughter Mom has trait W W Dad has trait P N Both have trait W W Neither have trait N N

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