A boy's Y chromosome will generally NOT be identical to that of his

Name: A boy's Y chromosome will generally NOT be identical to that of his
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The Y chromosome is passed from father to son, so a boy's Y chromosome comes from his father and is generally identical to that of his paternal grandfather, potentially similar to his brothers (assuming they share the same father), but not from his maternal great-grandfather, as the Y chromosome is not passed down through the maternal line.

A Boy's Y Chromosome Will Generally NOT Be Identical to That