introgression from Neandertal and Denisovan relatives in our past has resulted in many humans around the world having alleles derived from these extinct ancestors. describe one allele attributed to Neanderthals and one allele attributed to Denisovans in humans today. for your description, include the role of the gene(s) that the allele are linked to, what benefit or feature they are proposed to contribute to, and the population(s) that carry the allele. a denisovsn or neandertal haplotype would also be suitable. the source(s) must include at least one from the primary literature*. cite your sources as provide references (ApAA format is fine for citing and referencing). (each example 2pts) (please also try to limit your answer to both to 500 words or less – not counting citations or references)