Mendelian Disorders
Hardbiology
Which one is a dominant trait in human beings?
Select the correct option:
Solution
Incorrect! Answer:
Polydactyly
- Genetic Traits: Traits can be autosomal dominant or recessive.
- Albinism & Rh negative: These are autosomal recessive traits.
- Polydactyly: The condition of having more than the normal number of fingers or toes is caused by an autosomal dominant allele.
- Attached Earlobes: Usually considered a recessive trait.
- Conclusion: Polydactyly is the dominant trait among the choices.
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About This Question
- Subject
- biology
- Chapter
- principles of inheritance and variation
- Topic
- mendelian disorders
- Difficulty
- Hard
- Year
- 2025
Solution
Correct Answer:
Polydactyly
- Genetic Traits: Traits can be autosomal dominant or recessive.
- Albinism & Rh negative: These are autosomal recessive traits.
- Polydactyly: The condition of having more than the normal number of fingers or toes is caused by an autosomal dominant allele.
- Attached Earlobes: Usually considered a recessive trait.
- Conclusion: Polydactyly is the dominant trait among the choices.
This hard difficulty biology question is from the chapter principles of inheritance and variation, covering the topic of mendelian disorders. It appeared in the 2025 exam.
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