Multiple Choice
Based on the principles of mitochondrial DNA inheritance, which of the following pairs of family members in a pedigree are most likely to share identical mitochondrial DNA?
1
views
2. Mendel's Laws of Inheritance
Pedigrees
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
This pedigree exhibits which of the following inheritance patterns?
A
Y-Linked
B
Autosomal Recessive
C
X-linked Dominant
D
Autosomal Polymorphism
Verified step by step guidance1
Examine the pedigree chart to identify the pattern of inheritance. Look for whether the trait appears in every generation or skips generations.
Determine if the trait is equally distributed among males and females. If it is, this suggests an autosomal pattern rather than a sex-linked pattern.
Check if the trait is passed from fathers to sons, which would indicate a Y-linked pattern. In this pedigree, the trait is not exclusively passed from father to son.
Observe if the trait is passed from affected individuals to their offspring. If both males and females can be affected and unaffected parents can have affected children, this suggests an autosomal recessive pattern.
Consider the possibility of autosomal polymorphism, where the trait is common in the population and does not follow a simple Mendelian inheritance pattern. This can explain the presence of the trait in multiple family members without a clear dominant or recessive pattern.
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