PLA 081) There are numerous adaptations for a bipedal gait. Describe two of these morphological adaptations. (2 points)S-shaped spine, centered foramen magnum, expanded patellar surface, valgus knee, expanded femoral condyles, double-arched foot, hallux in line with the rest of the toes, short/broad pelvis, coronal iliac blades2) Match the following apes with their appropriate mating system: (2 points)a. Orangutans: Solitaryb. Gibbons: Monogramyc. Gorillas: Polygyny (1 male/multi female)d. Chimpanzees: Polygyny (multi male/ multi female)3) Imagine you stumble across a paleoanthropological site while building a vacation home in East Africa. You discover both hominin and faunal fossil material. The hominin skeletal material found between two volcanic layers – the bottom layer dates to 2.6 million years (mya), while the top layer dates to 1.3 mya. The faunal material belongs to Metridiochoerus compactus, which is known to date from 1.6-0.78 mya. Using the two separate date ranges, calculate the BEST possible date range for your site. (HINT: What is the overlap between the two ranges?) (1 point) 1.6-1.3mya4) True or False: Relative parental investment is the key variable in controlling sexual selection. (1 point) True5) All of the following would be bad contexts for preservation, except: (1 point)a. Weatheringb. Consumption and trampling by animalsc. Acidic soild. Rapid buriale. Geologically active landscapes6) Match the following time ranges with the correct epoch:a. 65-55.8 mya: Paleoceneb. 55.8-33.9mya: Eocenec. 33.9-23.8 mya: Oligocened. 23.8-5.3 mya: Miocenee. 5.3-2.6 mya: Pliocenef. 2.6-0.01 mya: Pleistoceneg. 0.01 mya- present: Holocene7) All of the following are absolute (chronometric) dating techniques, except: a. K-Arb. TLc. OSLd. Carbon-14e.
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