What makes us human? A question that is difficult to give an unequivocal answer to. Katherine S. Pollard makes an interesting attempt at this in her article of the same title, where she describes the differences and similarities between human and chimpanzee genomes (since chimpanzees are humans’ closest living relatives and share nearly 99 percent of our DNA). These studies have focused on protein-coding genes. The researchers have identified several sequences of genetic code that differ between humans and chimps. These sequences may hold the most promise for determining what creates human-specific traits such as speech. These quickly evolving, unambiguously human sequences do have a purpose to some way forward. The story of what created us humans is perhaps not going to specialize in changes in our protein building blocks, but rather in how evolution assembled these blocks in new ways in which by ever-changing once and wherever within
the body totally different genes activate and off. Experimental and process studies currently underneath this method in thousands of labs around the world promise to elucidate what’s happening within the 98.5 % of our genome that doesn’t code for proteins. It’s wanting less and fewer like junk daily. Katherine also talks about dietary adaptation involving a sequence for lactase, an enzyme that enables mammals to digest the carbohydrate lactose, conjointly referred to as milk sugar. In most species, solely nursing infants will use milk sugar. However, around 9,000 years have passed recently, in biological process termschanges within the human genome created versions of LCT that allowed adults to digest lactose. She also mentioned that efforts to identify those regions of the human genome that have modified the foremost since chimps and humans diverged from a common ancestor have helped pinpoint the DNA sequences that make us human.