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In mammals, one of the X chromosomes is inactivated in females; in Drosophila, the level of transcription on the X chromosome in males is doubled; in C. elegans, level of transcription of the X chromosome in hermaphrodites is decreased by 50% relative to that of males.

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2023年10月31日 · The correct answer is C) XBxb. This genotype indicates a colorblind female. Colorblindness is a recessive trait that is carried on the X chromosome. In this case, the capital 'X' represents a normal color vision allele and the lowercase 'b' represents the colorblindness allele.

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A) XBY B) XbY C) XBXb D) XbXb, Chromosomes that do not differ between males and females, of which there are 22 in humans, are called _____ chromosomes, In a pedigree, an unaffected female would be designated by and more.

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XBXB： 这个就是大家常见的一室一厅到四室两厅的住房。 1B1B的价格会比Studio稍微贵一丢丢，其他的话房间数越多会越便宜，隐私度比studio稍差一丢。 厨房客厅是公用的，但是有一点要注意，有些客厅也会住人，介意的话要提前问清楚房东。 House： 四间房以上的户型，一般来说是类似别墅那样的，总体来说跟XBXB的差不多了。 但因为房间多，所以分摊下来租金也相对便宜，还会有花园。 不过house和XBXB都有的缺点是，容易跟舍友因为生活上的一些琐事 (公共区域 …