title: The origin and evolution of gamete dimorphism and the male-female phenomenon.
mesh_terms: D000220:Adaptation, Biological; D005075:Biological Evolution; D002455:Cell Division; D005260:Female; D005306:Fertilization; D005787:Gene Frequency; D005799:Genes, Dominant; D014644:Genetic Variation; D005838:Genotype; D005854:Germ Cells; D006238:Haploidy; D006720:Homozygote; D008297:Male; D008954:Models, Biological; D010063:Ovum; D012641:Selection, Genetic; D012744:Sex Ratio; D013094:Spermatozoa