X:A Ratio
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The X:A ratio is the ratio between the X chromosome and the number of sets of autosomes in an organism. This ratio is used primarily for determining sex of drosophila flies. Generally, a 1:1 ratio results in a female and a 1:2 ratio results in a male. When calculating the ratio, Y chromosomes are ignored. For example, for a triploid drosophila that has XXX, the ratio is 1:1 (3 Xs to 3 autosomes, since it is a triploid). For a diploid drosophila that has XY, the ratio…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The X:A ratio is the ratio between the X chromosome and the number of sets of autosomes in an organism. This ratio is used primarily for determining sex of drosophila flies. Generally, a 1:1 ratio results in a female and a 1:2 ratio results in a male. When calculating the ratio, Y chromosomes are ignored. For example, for a triploid drosophila that has XXX, the ratio is 1:1 (3 Xs to 3 autosomes, since it is a triploid). For a diploid drosophila that has XY, the ratio is 1:2 (1 X to 2 autosomes, since it is diploid). The X chromosome is one of the two sex-determining chromosomes in many animal species, including mammals (the other is the Y chromosome).