A small gene pool is generally bad for a species because it reduces variation. Let's go back to our fruit fly example. Let's say there are 20 alleles at locus 1, and one of those alleles causes a particular disease when a fly has two copies of that allele (homozygous). Because there...
When a gene is turned off, it no longer provides the directions for making proteins. This means that the proteins needed to fulfill a particular job -- say, tolerate lactase -- aren't produced. Think about following driving directions on a GPS device in your car. What happens when you dr...
as well. For example, SNPs in the MTHFR gene can create a whole host of health problems—everything from irritability and obsessiveness to birth defects and cancer can be a result of an MTHFR gene mutation. (Note that I said can. They don’t have to—that’s what this is all about...
Genetics can also carry the likelihood of developing certain inherited diseases e.g. breast cancer. Knowledge is obtained by a number of ways and is used to help an individual 774 Words 4 Pages Satisfactory Essays Read More Related Topics Genetics DNA Gene Human genome Psychology Cell...
the composition of the human gene pool has not changed appreciably, but with increasing global participation in athletics – and greater rewards to tempt athletes – it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early. ‘Was ...
In August, a group of scientists from the US and South Korea worked together to successfully edit a human embryo and remove a genetic mutation(突变)that would have led to heart disease, reported The Guardian. This was achieved with the help of CRISPR, a gene-editing tool that allows scien...
One of the researchers was Dr. Juan Piantino of Oregon Health & Science University. Piantino said the new research was important evidence. “We needed this piece to say this happens in humans, too,” he said. His team recently published i...
a gene-editing tool that al ows scientists to "cut an d paste" human DN A.Although this was th e first exampl e of an er bryo's genes being chang e d successfully, th e dvantages of gen e editing hav e already been est e d in living patients. In 2015, a five-mon h-ol...
is “the product of the KLF2 gene is involved in the development of the cardiovascular system in mice”—and this hypothesis is probably (hopefully) based on a clear observation, such as that mice with low levels of Kruppel-like factor 2 (which KLF2 codes for) seem to have heart problems...
the composition of the human gene pool has not changed appreciably, but with increasing global participation in athletics — and greater rewards to tempt athletes — it is more likely that individuals possessing the unique complement of genes for athletic perfor-mance can be identified early.‘Was ...