BIO 171 EXAM 3 FULLY SOLVED EXAM PAPER
GRADED A+
◉ Lucy (Australopithecus).
Answer: 4-2 MYA, bipedal, small brained, fruit/vegetable diet
◉ Paranthropus.
Answer: 3-1.2 MYA, bipedal, small brained, stocky, robust teeth and
jaws, grass/seed diet
◉ hominins.
Answer: sub-family of hominids that have bipedalism
now this is only humans (homo sapiens), 2 MYA
◉ paranthropus.
Answer: before hominin, defining traits -
◉ homo ergaster.
Answer: sister neanderthals, left Africa two million years ago,
evolved into denisovans
◉ homo habilis.
,Answer: first to use tools, had small skulls
◉ homo erectus.
Answer: first to use fire, evolved in Asia
◉ homo heidelbergensis.
Answer: evolved in Africa and moved to Eurasia
◉ homo nenderthalensis (neanderthals).
Answer: used complex tools, evolved in Europe and Western Asia,
interbred with homo sapiens
◉ introgression.
Answer: the transmission of alleles from one species to another with
limited interbreeding, ex) neanderthals gave alleles to homo sapiens
that still exist today
◉ lactase persistence.
Answer: the continued activity of the lactase enzyme
◉ mammals.
Answer: hair/fur, mammary glands, warm blooded
, ◉ mass extinction.
Answer: periods when large numbers of species (50%, or more, of
those present) go extinct in a short geological period of time (a few
million years), in a more-or-less random pattern.
◉ MC1R gene.
Answer: codes for which type of melanin is produced
◉ melanin.
Answer: determines the color of skin, phenomelanin = lighter,
eumelanin = darker
◉ primates.
Answer: eyes on the front of the face, 10 fingers and 10 toes,
flattened nails
◉ falate.
Answer: a vitamin B produced in the blood vessels in skin, necessary
for a healthy pregnancy
◉ UV radiation.
GRADED A+
◉ Lucy (Australopithecus).
Answer: 4-2 MYA, bipedal, small brained, fruit/vegetable diet
◉ Paranthropus.
Answer: 3-1.2 MYA, bipedal, small brained, stocky, robust teeth and
jaws, grass/seed diet
◉ hominins.
Answer: sub-family of hominids that have bipedalism
now this is only humans (homo sapiens), 2 MYA
◉ paranthropus.
Answer: before hominin, defining traits -
◉ homo ergaster.
Answer: sister neanderthals, left Africa two million years ago,
evolved into denisovans
◉ homo habilis.
,Answer: first to use tools, had small skulls
◉ homo erectus.
Answer: first to use fire, evolved in Asia
◉ homo heidelbergensis.
Answer: evolved in Africa and moved to Eurasia
◉ homo nenderthalensis (neanderthals).
Answer: used complex tools, evolved in Europe and Western Asia,
interbred with homo sapiens
◉ introgression.
Answer: the transmission of alleles from one species to another with
limited interbreeding, ex) neanderthals gave alleles to homo sapiens
that still exist today
◉ lactase persistence.
Answer: the continued activity of the lactase enzyme
◉ mammals.
Answer: hair/fur, mammary glands, warm blooded
, ◉ mass extinction.
Answer: periods when large numbers of species (50%, or more, of
those present) go extinct in a short geological period of time (a few
million years), in a more-or-less random pattern.
◉ MC1R gene.
Answer: codes for which type of melanin is produced
◉ melanin.
Answer: determines the color of skin, phenomelanin = lighter,
eumelanin = darker
◉ primates.
Answer: eyes on the front of the face, 10 fingers and 10 toes,
flattened nails
◉ falate.
Answer: a vitamin B produced in the blood vessels in skin, necessary
for a healthy pregnancy
◉ UV radiation.
