Choose one of the pairs of hominids below and compare them, including morphology, social
development, tool making, etc.
A. Homo habilis and Homo neanderthalensis
B. Homo neanderthalensis and Homo sapiens
C. Ardipithecus ramidus and Australopithecus anamensis
D. Australopithecus afarensis and Australopithecus africanus What will be an ideal response?
A. Homo hablis is the first hominin. This fossil species of Homo had a small brain and smaller
premolars and was found with primitive tools. Homo neandertalensis was a more recent species of
Homo, and it is believed that modern humans lived around the same time. Their brains and and front
teeth were larger than modern humans. Their tools were more sophisticated than those made by Homo
hablis.
B. Homo neanderthalensis lived 250,000-28,000 years ago. They had a short sturdy build with
receeding chins and foreheads. Their brains, however, were larger than those of Homo sapiens. Homo
sapiens existed in Africa 195,000 years ago.
C. Ardipithecus ramidus is close to the root of the human family tree. The shape of the toe boones
suggest that Ardipithecus walked upright. Ardipithecus ramidus gave rise to Australopithecus
anamensis. This species has a mix of ape-like and human features.
Australopithecus anamensis had sexual dimorphism. The tibia of this species suggest that they walked
upright.
D. Australopithecus afarensis gave rise to Australopithecus africanus. A. afarensis. had small brains.
No evidence of tools was found with A. afarensis. A. africanus possessed humanlike hands and teeth
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Indicate whether this statement is TRUE or FALSE.
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Would it be possible and/or appropriate to design a genetic screen to look for a gene(s) involved in homosexuality?
What will be an ideal response?