Chromosome Abnormalities and Non-Mendelian Inheritance Video Lessons

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Problem: Mary carries a mutation in her mitochondrial DNA that causes her muscles to tire quickly. She has 3 children with John, who is a world-class marathon runner. Considering those 3 children:A. All 3 are likely to be marathoners like their father.B. 2 of the 3 are likely to be marathoners like their father.C. Any male child is likely to be a marathoner like their father.D. None of the children are likely to be marathoners like their father.

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The inheritance of traits expressed by genes from the mitochondria will depend solely on a single parent. 

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Problem Details

Mary carries a mutation in her mitochondrial DNA that causes her muscles to tire quickly. She has 3 children with John, who is a world-class marathon runner. Considering those 3 children:

A. All 3 are likely to be marathoners like their father.

B. 2 of the 3 are likely to be marathoners like their father.

C. Any male child is likely to be a marathoner like their father.

D. None of the children are likely to be marathoners like their father.

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