The 1:1 ratio results from the way the X and Y chromosomes are doled out in sperm and eggs. We know that boys and girls are produced in much the same frequency. But how – and why – is this 1:1 ...
The BBC is not responsible for any changes that may be made. Manager: Didier Gomes Da Rosa Formation: 4 - 1 - 4 - 1 Manager: Pedro Leitão Brito Formation: 4 - 3 - 3 Manager: Didier Gomes Da Rosa ...
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