If females have two X chromosomes and males have only one, why doesn’t that create a biological imbalance? In 1961, British geneticist Mary Lyon proposed a simple theory of X-chromosome inactivation in females. Lyon explained that, During early embryonic development, each cell in a female embryo makes a random choice. It switches off one X chromosome, either the maternal X or the paternal X. This choice remains permanent, and all daughter cells inherit the same inactivated X chromosome throughou
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Answered: Why do females not produce more protein encoded by genes on the X chromosome than males? One X chromosome is inactivated There are no proteins encoded by genes… | bartleby
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SOLVED:In Drosopbila , the genes b w and s t are located on chromosomes 2 and 3, respectively. Flies homozygous for b w mutations have brown eyes, flies homozygous for st mutations have scarlet eyes, and flies homozygous for b w and st mutations have white eyes. Doubly heterozygous males were mated individually to homozygous b w ; st females. All but one of the matings produced four classes of progeny: wild-type, and brown-, scarlet- and white-eyed. The single exception produced only wild-type a
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