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17-03-2022
Biology

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Trisomy for most autosomes is fatal, yet trisomy or even tetrasomy (four copies) of the X chromosome is not. What is the explanation for this difference? View Available Hint(s)for Part A There is a mechanism to keep only two X chromosomes functional, regardless of the total number. The X chromosome does not carry any genes. The number of X chromosomes is always balanced by the number of Y chromosomes. Only one copy of the X chromosome is functional within any given cell, regardless of the total number of X chromosomes.

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hgonzaleshg hgonzaleshg

17-03-2022

Trisomy for most autosomes is fatal, yet triso X chromosomes functional, regardless of the total number. The X chromosome does not carry any genes. The number of X chromosomes is always balanced by the number of Y chromosomes. Only one copy of the X chromosome is functional within any given cell, regardless of the total number of X chromosomes.

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