Color blindness occurs when an individual is unable or has diminished ability to see certain colors. red‑green color blindness is an x‑linked recessive trait, and whether or not an individual is red-green color blind is influenced by three different alleles. xc codes for normal vision and is dominant to xcp and xcd. xcp is the protan type, which produces insensitivity to red light. xcd is the deutan type, which produces insensitivity to green light. however, heterozygous recessive individuals, who have the genotype xcpxcd, have normal vision. in a hypothetical scenario, a scientist evaluates 5000 males and 5000 females. of the males, 4601 had normal vision, whereas 399 were red‑green color blind. of the females, 4981 had normal vision, whereas 19 were red‑green color blind. when analyzed further, it was determined that 2 of the color blind females had the genotype xcpxcp, and 17 of the color blind females had the genotype xcdxcd. what is the genotype frequency of males with deutan‑type color blindness

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa. which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.