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Although the K a /K s ratio is a good indicator of selective pressure at the sequence level, evolutionary change can often take place in the regulatory region of a gene which affects the level, timing or location of gene expression. K a /K s analysis will not detect such change. It will only calculate selective pressure within protein coding ...
jsoup was created in 2009 by Jonathan Hedley. It is distributed it under the MIT License, a permissive free software license similar to the Creative Commons attribution license.
The human sex ratio is the ratio of males to females in a population in the context of anthropology and demography. In humans, the natural sex ratio at birth is slightly biased towards the male sex. It is estimated to be about 1.05 [1] or 1.06 [2] or within a narrow range from 1.03 to 1.06 [3] males per female.