Anthropology 240 Quiz 9: Key Concepts in Human Evolution

Anthropology 240 Quiz 9 Q1.) It is thought that Australopithecus afarensis had speech abilities similar to modern humans Answer: False Q2.) Robust Australopithecines had .... Answer: Big zygomatics, Sagittal crests (bone mohawks!), [and] Bigger posterior teeth Q3.) Sahelanthropus tchadensis dates to approximately ____ million years ago. Answer: 6 to 7 million years ago Q4.) In bipedal hominins, the foramen magnum is positioned to the back of the cranium Answer: False Q5.) Sexual dimorphism in primates can be indicated by ____ size. Answer: Canine Q6.) The most famous fossil find of Au. afarensis is known as Answer: Lucy Q7.) Which species is associated with the Laetoli footprints? Answer: Au. afarensis Q8.) Faunal assemblages can reveal information about ____ conditions. Answer: local environmental conditions

Q9.) The Laetoli footprints provide valuable information about the ____ of early hominins. Answer: bipedality migration Q10.) The four main molecules that are essential to cell structure and make up life on our planet are .... Answer: Protein, Lipids, Carbohydrates and Nucleic Acids Q11.) __________ is a mode of natural selection in which extreme values for a trait are favored over intermediate values. Answer: Disruptive Selection Q12.) There are four different DNA nucleotides. They are... Answer: Adenine, Thymine, Guanine and Cytosine Q13.) A P-Value in statistics is .... Answer: A Probability Value- that is the likelihood something is occurring not due to chance Q14.) When biologists say one should use parsimony when making a tree, they mean what? Answer: That less evolutionary steps are better than more steps to explain relationships Q15.) Platyrrhines, "Flat Nosed", are... Answer: New World Monkeys Q16.) Pseudofossils are...

Answer: Are misinterpretations of rocks that look like true fossilized remains and are a result of impressions or markings on rock, and can even be the result of the way other inorganic materials reacts with the rock Q17.) Let us imagine that we have a flowering plant with the genotype of Ff and FF, where Ff is yellow dominant with a green recessive and FF is dominant yellow with a dominant yellow. In this scenario, what is the most likely genotype of the child? Here is a Punnett Square to help you Answer: There is no question that the plant will be dominant yellow, FF or Ff as each box of the Punnett square would have the dominant yellow present Q18.) The reason biologists say that race is culturally constructed is... Answer: Because there is no single gene that codes for a specific "race" Q19.) Radiation from an element .... Answer: Occurs when the atom releases energy as it goes from an unstable state to a stable state. Q20.) A/the rhinarium is .... Answer: The furless skin surface surrounding the external openings of the nostrils in many mammals. Q21.) Primates are classified using a suite of characteristics, not one single common characteristic Answer: True Q22.) Kin selection theory predicts that... Answer: Animals will most often display altruistic tendencies towards others of their same genetic background- siblings, children, parents, relatives, cousins, etc.. when compared with non-kin

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Q23.) One of the biggest findings from the discovery of Ardipithecus ramidus that changed how we view early Hominid evolution is... Answer: That they lived in a wooded area and not a savannah, contradicting the early hypothesis that our ancestors became bipedal as an adaptation to shrinking woodlands and expanding grasslands. Q24.) The term “hominin” (note no 'i' at the end) refers to Answer: Modern day humans and extinct human ancestors (using bipedalism basically as a delineating point) Q25.) “Morphology” refers to the ____ of organisms. Answer: Physical features

Anthropology240Quiz9

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