Question
Which of the following does not result in variations among siblings?
Independent assortment of genes
Crossing over
Linkage
Mutation
Independent assortment of genes
Crossing over
Linkage
Mutation
Hint:
The proximity of genes or other DNA sequences to each other on the same chromosome doesn't cause variation in siblings.
The correct answer is: Linkage
- Linkage does not lead to differences between siblings because the linked genes are on the same chromosome and are transmitted together.
- When linked, they tend to retain parental gene combinations, except for occasional crossovers.
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