DavidFirth
Well-Known Member
DNA similarity indicates relatedness.
You need to read over the articles, and my last post where I pointed out how scientists were able to map out and detect the genetic alterations that occurred over tens of millions of years that resulted in the digestive, metabolic and musculatory differences between the big cats that were included in the study. The degree of relatedness between living creatures helps us determine where they fall along the phylogenetic tree. It’s a pretty good method (one of many) for helping scientists figure out what came from what or that “one came from the other.” Read up on comparative genomics sometime.
“The tiger shares 95.6 percent of its genome with the domestic cat, from which it diverged about 10.8 million years ago, the comparison showed.
In addition, several genes were altered in metabolic pathways associated with protein digestion and metabolism, or how the body uses fuel like food to power cells. Those changes, which evolved over tens of millions of years, likely enable the majestic felines to digest and rely solely on meat, Bhak said.
Big cats also have several mutations that make for powerful, fast-acting muscles — a necessity when chasing down prey.
The team also found two genes in the snow leopard that allow it to thrive in the low-oxygen conditions of its high-altitude habitat in the Himalayan Mountains. Those genetic changes are similar to ones found in the naked mole rat, which also lives in low-oxygen conditions, though underground. In addition, the genetic analysis identified the mutations that give Bengal tigers and white African lions their distinctive white coats, Bhak said.”House cats and tigers share 95.6 percent of DNA, study reveals
The tiger genome and comparative analysis with lion and snow leopard genomes
Actually, chimps are quite intelligent and not actually stupid at all. You should read up on chimps as well.
We didn't descend from chimps, rather, we share a common ancestor with them. Nobody is asserting that chimps are human. Chimps and humans are however, both Homininae.
"DNA similarity indicates relatedness."
No, it does not. It indicates DNA similarities and that's all it indicates. The relatedness is a figment of the imaginations of scientists.
You cannot prove we share a similar ancestor with chimps. This is a figment of the imaginations of scientists. Similar DNA means similar DNA. That's all it means.