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Among 10,000 twin births, there were 4350 male pairs, 4150 female pairs and 1,500 male-female pairs. What are the number of
1 answer
asked by
Cool
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How do fraternal twins differ from identical twins? (1 point)
One egg implanting without being fertilized versus two eggs
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asked by
hello!
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Parent Categories (2)
Human Genetics
Reproduction