QUESTION IMAGE
Question
why are identical twins similar to each other but not identical?
a independent assortment
b polygenic inheritance
c incomplete dominance
d multiple alleles
Fraternal (dizygotic) twins form from two separate fertilized eggs. They share about 50% of their genes, like regular siblings, because each egg and sperm gets a random mix of parental genes through independent assortment during meiosis. This genetic similarity (not identicalness) comes from this random distribution of chromosomes, while the other options describe genetic inheritance patterns that don't explain twin similarity/non-identicalness.
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A. independent assortment