Gene Variants Ancient DNA Neanderthal Genetics Mental Health Genetics Population Genetics Sex Determination AMY1 Gene Longevity Neanderthal DNA Disease Genetics Denisovan DNA Ancient Genomes Adaptations Genetic Variation Gene Duplication Longevity Research Genetic Variants Exome Sequencing Lifespan Genetics Ancient Lineages Circadian Rhythms Neanderthal Genes DNA Gene Evolution Humanized Mice Human Genome Proteins Human Genetic Engineering Handedness DNA Sequencing Physiological Adaptation Genetic Studies Developmental Genetics Adaptation Developmental Milestones Migration Patterns Gene Identification Major Histocompatibility Complex Human-Accelerated Regions Single Nucleotide Polymorphisms (SNPs) Cancer Genetics Autism Genetics Genomic Diversity Genomic Variation Lifespan Olfactory Genetics Hibernation Genetics Disease Mechanisms Genetic Markers Chronic Fatigue Syndrome ADSL Enzyme Variants MUC19 Gene Denisovans Denisovan Genetics Repetitive DNA Comparative Genetics Disease Risk Eye Color Mental Health Alien DNA Obesity Genes Metabolism Alien Genetic Manipulation Extraterrestrial Influence Lifespan Research Rare Variants Facial Development Mutations Supercentenarians APOE Gene Ancestral DNA Chromosomal Abnormalities APOE Gene Variants Nutritional Genetics Life Expectancy Lifespan Studies Ageing Protective Genes Genetic Factors Family Tree Genetic Variations Genomic Studies FTO Gene Variants Ancestry Research Amylase Genes Amylase Gene Variations Neanderthals Sex Ratio AMY1 Gene Variations Starch Digestion Amylase Gene Awards Hominin Interbreeding Tooth Development Gender Determination Mitochondrial DNA Ancestral Populations
Genomic comparisons and modeling point to a 62% excess of modern-human DNA on Neanderthal X chromosomes, offering a parsimonious explanation for long-noted X‑chromosome "Neanderthal deserts" in people today.
