multiple choice:The peculiar beveled wear (inward from the lips) that tends to characterize the incisors of older Neanderthals may reflect:a the great power of their temporalis and masseter muscles.b their congenital lack of premolars.c their tendency to grind their teeth in their sleep.d intentional alteration of the face to increase sexual attractiveness.e the use of the front teeth as tools, e.g. holding animal skins while scraping them Mitochondrial DNA shows that all humans living today share a common maternal ancestor who lived somewhere in:a in Eurasia about 200,000 years ago.b in Africa about 200,000 years ago.c in Africa and had only male children.d in Eurasia about 2 million years ago.e in Eurasia and gave rise to both Homo sapiens and Homo ergaster. Ancient DNA specialists often focus on mitochondrial (mt) DNA, as opposed to nuclear DNA, because:a it preserves especially well in female bones.b all primates have mtDNA, but only advanced species have nuclear DNA.c each cell has many more copies of mtDNA, so it is easier to detect and extract.d mtDNA is harder than nuclear DNA, which means it is more likely to survive.e the Polymerase Chain Reaction (PCR) works only with mitochondrial DNA. The earliest fossils possibly attributable to the genus Homo appear in the record at:a 4.2 Ma.b 3.5 Ma.c 2.8 Ma.d 1.9 Ma.e none of the above

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Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter15: Diversity Of Animals

Section: Chapter Questions

Problem 3ACQ: Figure 15.33 Which of the following statements about common features of chordates is true? a. The...

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multiple choice:

The peculiar beveled wear (inward from the lips) that tends to characterize the incisors of older Neanderthals may reflect:

a		the great power of their temporalis and masseter muscles.
b		their congenital lack of premolars.
c		their tendency to grind their teeth in their sleep.
d		intentional alteration of the face to increase sexual attractiveness.
e		the use of the front teeth as tools, e.g. holding animal skins while scraping them

Mitochondrial DNA shows that all humans living today share a common maternal ancestor who lived somewhere in:

a		in Eurasia about 200,000 years ago.
b		in Africa about 200,000 years ago.
c		in Africa and had only male children.
d		in Eurasia about 2 million years ago.
e		in Eurasia and gave rise to both Homo sapiens and Homo ergaster.

Ancient DNA specialists often focus on mitochondrial (mt) DNA, as opposed to nuclear DNA, because:

a		it preserves especially well in female bones.
b		all primates have mtDNA, but only advanced species have nuclear DNA.
c		each cell has many more copies of mtDNA, so it is easier to detect and extract.
d		mtDNA is harder than nuclear DNA, which means it is more likely to survive.
e		the Polymerase Chain Reaction (PCR) works only with mitochondrial DNA.

The earliest fossils possibly attributable to the genus Homo appear in the record at:

a		4.2 Ma.
b		3.5 Ma.
c		2.8 Ma.
d		1.9 Ma.
e		none of the above

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