Beak color: y for yellow beak (yy and yy) and y for black beak (yy) tail-feather length: l for long tail (ll and ll) and l for short tail (ll) feather color: b for blue feathers (bb and bb) and b for white feathers (bb) part 1: crossing beak color and tail-feather length cross a yyll (heterozygous parent with dominant traits) with yyll (homozygous parent with recessive traits). look at the number of phenotypes of the f1 generation: yyll: 400 yyll: 100 yyll: 100 yyll: 400 (2 points) score 1. which offspring are the recombinant offspring in this cross?(2 points) score 2. how far apart are y and l? give your answer in map units. (hint: add the numbers of the two recombinant types, divide by the total number of offspring, and multiply by 100.) need answering

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.