Adaptive Introgression Examples
Adaptive introgression has proven to have many adaptive values and affects the genomic variation of humans and many other species. Many populations display examples of introgression. In the article prof. Haws and Cochran talk about introgression and how it affects it affects genomic variation among humans and other species. Introgression has proven to have adaptive values and is quantifiable. It can have several outcomes; it can reduce fitness and create sterility, but at the same time it can help the organism adapt better to its environment. It can increase depending in changes in environment. Introgressive genotypes can travel though time and space surviving without being noticed for many years. It has been important for breeding experiments
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There are many articles that could be used to back up prof. Haws and Cochran article adding up to the examples given. An Article by Reed et al. they talk about how you can see the adaptive introgression through lice. According to the article “Morphological and molecular data agree that primates and their lice have been cospeciating for over 20 MY” (Reed, 2004). Thanks to the lice data researchers were able to know when the humans speciated into different species. After some time both species went through a bottleneck, which left the species with a low adaptation rate. Later generations of lice show that there was a gene flow between species of human, this proving contact of the species. Different sources of information give more validity to the studies. A second article talks about how it is hard to see the archaic lineages thanks genetic drift. “Our study thus provides a methodological template for identifying additional loci in the human genome that might harbor alleles from archaic populations through introgression and subsequent positive selection.” (Evans et al., 2006) Even though the article by prof. Haws and Cochran has many examples and data, another source of data is always good. There is another article by Lieberman et al. that explains about the behavior of the different human species. After the contact of Archaic and modern humans not only did gene flow happened thanks to adaptive introgression but also behavior of the modern species changed. According to the article by Lieberman et al. Modern humans copied seasonal hunting from archaic humans. As we some in class, this is proof that behavior can also be passed on between similar species. This would give a different view to adaptive introgression making the paper go further and have more impact to the
There are many articles that could be used to back up prof. Haws and Cochran article adding up to the examples given. An Article by Reed et al. they talk about how you can see the adaptive introgression through lice. According to the article “Morphological and molecular data agree that primates and their lice have been cospeciating for over 20 MY” (Reed, 2004). Thanks to the lice data researchers were able to know when the humans speciated into different species. After some time both species went through a bottleneck, which left the species with a low adaptation rate. Later generations of lice show that there was a gene flow between species of human, this proving contact of the species. Different sources of information give more validity to the studies. A second article talks about how it is hard to see the archaic lineages thanks genetic drift. “Our study thus provides a methodological template for identifying additional loci in the human genome that might harbor alleles from archaic populations through introgression and subsequent positive selection.” (Evans et al., 2006) Even though the article by prof. Haws and Cochran has many examples and data, another source of data is always good. There is another article by Lieberman et al. that explains about the behavior of the different human species. After the contact of Archaic and modern humans not only did gene flow happened thanks to adaptive introgression but also behavior of the modern species changed. According to the article by Lieberman et al. Modern humans copied seasonal hunting from archaic humans. As we some in class, this is proof that behavior can also be passed on between similar species. This would give a different view to adaptive introgression making the paper go further and have more impact to the