객관식
Which of the following is a purpose for which a pedigree chart might be prepared?
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2. Mendel's Laws of Inheritance
Pedigrees
객관식
Based on this pedigree, which mode of inheritance is most likely responsible for the observed pattern of affected individuals?
A
Mitochondrial
B
Autosomal recessive
C
X-linked recessive
D
Autosomal dominant
검증된 단계별 안내1
Step 1: Examine the pedigree to identify the pattern of affected individuals across generations. Note whether the trait appears in every generation or skips generations.
Step 2: Consider the characteristics of each mode of inheritance: Mitochondrial inheritance is passed only from mothers to all offspring; autosomal recessive traits often skip generations and affect males and females equally; X-linked recessive traits typically affect mostly males and can skip generations.
Step 3: Check if affected individuals appear in every generation, which suggests a dominant mode of inheritance rather than recessive or mitochondrial.
Step 4: Verify if both males and females are affected roughly equally, which supports autosomal inheritance rather than X-linked inheritance.
Step 5: Conclude that since the trait appears in every generation and affects both sexes equally, the most likely mode of inheritance is autosomal dominant.
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