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Studies have suggested that modern humans of European and Asian descent have inherited certain genes from Neanderthals that may provide increased resistance to cold temperatures. Some of the genes that may be involved in this process include:
Genes involved in skin pigmentation: Neanderthals had adapted to colder climates with lower levels of UV radiation by evolving lighter skin pigmentation. Modern humans of European and Asian descent may have inherited genes from Neanderthals that contribute to lighter skin pigmentation, which allows for better absorption of vitamin D in low-light environments.
Genes involved in hair growth and thickness: Neanderthals had thicker hair than modern humans, which may have provided better insulation in cold environments. Modern humans of European and Asian descent may have inherited genes from Neanderthals that contribute to thicker or more abundant body hair, which can help with insulation in cold temperatures.
Genes involved in energy metabolism: Neanderthals had a unique variant of a gene called UCP1 that is involved in energy metabolism and heat production. This variant may have allowed them to produce more body heat in cold environments. Modern humans of European and Asian descent may have inherited this gene variant from Neanderthals, providing increased resistance to cold temperatures.
Genes involved in immune response: Some studies have suggested that Neanderthals had a different set of immune-related genes than modern humans, which may have provided them with increased resistance to certain infections. It is possible that modern humans of European and Asian descent have inherited some of these genes from Neanderthals, which may contribute to increased resistance to cold-related illnesses.
Overall, the specific genes involved in increased resistance to cold temperatures in modern humans of European and Asian descent that may have been inherited from Neanderthals are still being studied and are not yet fully understood. However, the genes involved in skin pigmentation, hair growth, energy metabolism, and immune response are some of the potential candidates.
