2024-01-13 11:28:00
The DNA gave Neanderthals advantages in adapting to new environmental conditions, but was also accompanied by negative consequences, including nicotine addiction in some genes.
Genetic experts identify six key features that indicate the presence of Neanderthal heritage in human DNA: reports Mirror.
Approximately two percent of our DNA comes from our ancient ancestors. About 60,000 years ago, interbreeding occurred between Neanderthals in Africa and Asia.
Sebnem Unluisler, a genetic engineer, says genes influence everything from hair color to nicotine addiction among modern humans. Unlusler from the London Regenerative Institute said:
“Neanderthal DNA represents only a small percentage of the modern human genome, and these influences are only part of the genetic puzzle that makes each person unique.”
There are six unique characteristics that show we still have Neanderthal DNA.
Smoking – a genetically determined risk that remains in modern people, despite the fact that Neanderthals lived in Europe 40 million years before the advent of tobacco. The presence of DNA probably gave Neanderthals an advantage in adapting to new environments, but also led to undesirable consequences, including nicotine addiction.
In addition, researchers discovered DNA variantsassociated with depression, psychiatric and neurological problems. Unluisler emphasizes that there is a putative link between Neanderthal DNA and the risk of nicotine addiction, which may increase the likelihood of this phenomenon in people with Neanderthal ancestry.
Hair and genes: Neanderthal DNA influences various features of modern humans, including hair structure. People with thick, straight hair may also inherit Neanderthal DNA, and research suggests that even red hair was common among ancestors.
Biological rhythms and sleep: Neanderthal genes may also influence the body’s circadian rhythms that regulate sleep and wakefulness. Epigenetic factors such as climate, social dynamics, and light conditions may influence these rhythms, leading to differences in sleep cycles among people with Neanderthal ancestry.
Nose and climate adaptation: Larger or “higher” noses in humans may be a result of Neanderthal genes. Research from University College London shows that this physical feature evolved as early humans adapted to cold climates after leaving Africa.
Impact of COVID-19: A chromosome passed down from Neanderthal ancestors makes humans more vulnerable to COVID-19, according to research. This may be due to more severe disease in those who have this chromosome.
Tan: Neanderthal genes may also influence susceptibility to tanning or sunburn. Research conducted by the Max Planck Institute for Evolutionary Anthropology in Germany has identified DNA variants in Neanderthals that affect skin and hair color.
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