Why is Sahelanthropus tchadensis important in understanding evolution? What evidence is missing which is required to identify the species as a true hominin?
What will be an ideal response?
1. Geographic location and approximate date
2. Unique mix of hominoid and hominin features
3. Unknown whether the species was bipedal
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Where do new variations come from?
a. changes in the genetic material b. point mutations c. chromosomal mutations d. all of these
Research suggests that the modern human prefrontal region of the frontal lobe __________
a. is non-existent b. is less important than it is for other primates c. is larger than we would expect given the size of the human brain d. has less gray matter than the rest of the cortex
Analysis of the archaeofauna from the site of Chavín de Huántar, Peru, indicates
a. a change in diet through time, with increasing reliance on domesticated llamas. b. a change in diet through time, with increasing reliance on deer and large cats. c. a decrease in leg bones and an increase in cranial and foot bones through time. d. extreme carnivore damage to the faunal assemblage, making it impossible to infer any human behavior from the archaeofauna. e. the people starved to periodic lack of animals during several major droughts.
Of the hominin sites listed below, which one has the best preserved fossil material for Homo erectus in Europe?
a. Gran Dolina (Atapuerca) b. Ceprano c. Ubeidiya d. Boxgrove e. London