Question 1

The total numbers and kinds of genes in a given population is the ____. ​

Accepted Answer

A) population genotype 
B) species pool 
C) gene pool 
D) genetic drift 
E) group divergence 
A) population genotype 
B) species pool 
C) gene pool 
D) genetic drift 
E) group divergence

Question 2

Which species are our closest primate relatives? ​

Accepted Answer

A) bonobos 
B) gorillas 
C) orangutans 
D) gibbons 
E) lemurs 
A) bonobos 
B) gorillas 
C) orangutans 
D) gibbons 
E) lemurs

Question 3

Background extinction is a measure of the ____. ​

Accepted Answer

A) rate of species turnover at the end of geological eras 
B) number of species that suffer extinction at the beginning of geological eras 
C) steady rate of species turnover within a lineage throughout most of their evolutionary history 
D) lowest rate of species turnover within a lineage observed within a geological era 
E) animals that appear in the dense forest 
A) rate of species turnover at the end of geological eras 
B) number of species that suffer extinction at the beginning of geological eras 
C) steady rate of species turnover within a lineage throughout most of their evolutionary history 
D) lowest rate of species turnover within a lineage observed within a geological era 
E) animals that appear in the dense forest

Question 4

The scientist who developed the theory of natural selection was ____. ​

Accepted Answer

A) Malthus 
B) Crick 
C) Watson 
D) Darwin 
E) Smith 
A) Malthus 
B) Crick 
C) Watson 
D) Darwin 
E) Smith

Question 5

The founder effect is an important component of ____. ​

Accepted Answer

A) natural selection 
B) genetic drift 
C) gene flow 
D) inheritance 
E) mutations 
A) natural selection 
B) genetic drift 
C) gene flow 
D) inheritance 
E) mutations

Question 6

Fossils currently exist for about how many species? ​

Accepted Answer

A) 1,000 
B) 10,000 
C) 100,000 
D) 250,000 
E) 500,000 
A) 1,000 
B) 10,000 
C) 100,000 
D) 250,000 
E) 500,000

Question 7

Chance changes in a gene pool are known as ____. ​

Accepted Answer

A) natural selection 
B) genetic drift 
C) phenotype variations 
D) inheritance 
E) mutations 
A) natural selection 
B) genetic drift 
C) phenotype variations 
D) inheritance 
E) mutations

Question 8

What is NOT a viable explanation for the lack of fossil records for more species? ​

Accepted Answer

A) Movement of Earth's crust have destroyed fossils. 
B) Many species have not been preserved. 
C) Population density is too small to produce fossils that survive. 
D) Certain environments do not produce fossils as well as others. 
E) Body sizes are too large to become fossilized. 
A) Movement of Earth's crust have destroyed fossils. 
B) Many species have not been preserved. 
C) Population density is too small to produce fossils that survive. 
D) Certain environments do not produce fossils as well as others. 
E) Body sizes are too large to become fossilized.

Question 9

The lack of rust in the oldest existing rocks suggested that the primitive atmosphere had little or no ____. ​

Accepted Answer

A) oxygen 
B) nitrogen 
C) hydrogen 
D) water vapor ​ 
E) carbon dioxide 
A) oxygen 
B) nitrogen 
C) hydrogen 
D) water vapor ​ 
E) carbon dioxide

Question 10

Divergence may lead to ____. ​

Accepted Answer

A) genetic drift 
B) speciation 
C) balanced polymorphism 
D) gene flow 
E) genetic equilibrium 
A) genetic drift 
B) speciation 
C) balanced polymorphism 
D) gene flow 
E) genetic equilibrium

Question 11

Which species name means "upright man"? ​

Accepted Answer

A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis 
E) Neanderthals 
A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis 
E) Neanderthals

Question 12

Which species is the modern ancestor of modern humans? ​

Accepted Answer

A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis 
E) Neanderthals 
A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis 
E) Neanderthals

Question 13

The belief that humans arose in sub-Saharan Africa and then moved out is which model of evolution? ​

Accepted Answer

A) classic 
B) retroactive 
C) multiregional 
D) migratory 
E) African emergence 
A) classic 
B) retroactive 
C) multiregional 
D) migratory 
E) African emergence

Question 14

Which species is named for their ability to use tools? ​

Accepted Answer

A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis ​ 
E) Neanderthals 
A) Homo erectus 
B) Homo habilis 
C) Australopithecus afarensis 
D) Homo floreiensis ​ 
E) Neanderthals

Question 15

The history of life on Earth spans nearly ____. ​

Accepted Answer

A) 1 million years 
B) 100 million years 
C) 1 billion years 
D) 4 billion years 
E) 10 billion years 
A) 1 million years 
B) 100 million years 
C) 1 billion years 
D) 4 billion years 
E) 10 billion years

Question 16

What terms refers to the action of wrapping around an object? ​

Accepted Answer

A) flexion 
B) abduction 
C) circumduction 
D) prehensile 
E) opposition 
A) flexion 
B) abduction 
C) circumduction 
D) prehensile 
E) opposition

Question 17

One hypothesis suggests that complex organic compounds first formed ____. ​

Accepted Answer

A) in the atmosphere rich in oxygen 
B) along the rocks of the primitive ocean 
C) in bogs 
D) near hydrothermal vents 
E) in deep, dark, cold water 
A) in the atmosphere rich in oxygen 
B) along the rocks of the primitive ocean 
C) in bogs 
D) near hydrothermal vents 
E) in deep, dark, cold water

Question 18

About how many million years ago did humans of the genus Homo first inhabit eastern Africa? ​

Accepted Answer

A) 2 
B) 4 
C) 6 
D) 8 
E) 10 
A) 2 
B) 4 
C) 6 
D) 8 
E) 10

Question 19

Organisms are more likely to be preserved under which condition? ​

Accepted Answer

A) surface burial 
B) anaerobic environment 
C) slow burial 
D) decay in water 
E) wind and water erosion 
A) surface burial 
B) anaerobic environment 
C) slow burial 
D) decay in water 
E) wind and water erosion

Question 20

When comparing the gene coding for cytochrome c in several species, it was noted that humans and chimpanzees share the identical amino acid sequence. This means that ____. ​

Accepted Answer

A) humans and chimpanzees can mate and produce viable offspring 
B) humans evolved from chimpanzees 
C) over time, chimpanzees will eventually evolve into primitive humans 
D) humans and chimpanzees are closely related in evolutionary time 
E) chimpanzees will eventually evolve to become human 
A) humans and chimpanzees can mate and produce viable offspring 
B) humans evolved from chimpanzees 
C) over time, chimpanzees will eventually evolve into primitive humans 
D) humans and chimpanzees are closely related in evolutionary time 
E) chimpanzees will eventually evolve to become human

Exam 23: Principles of Evolution

The total numbers and kinds of genes in a given population is the ____. ​

Which species are our closest primate relatives? ​

Background extinction is a measure of the ____. ​

The scientist who developed the theory of natural selection was ____. ​

The founder effect is an important component of ____. ​

Fossils currently exist for about how many species? ​

Chance changes in a gene pool are known as ____. ​

What is NOT a viable explanation for the lack of fossil records for more species? ​

The lack of rust in the oldest existing rocks suggested that the primitive atmosphere had little or no ____. ​

Divergence may lead to ____. ​

Which species name means "upright man"? ​

Which species is the modern ancestor of modern humans? ​

The belief that humans arose in sub-Saharan Africa and then moved out is which model of evolution? ​

Which species is named for their ability to use tools? ​

The history of life on Earth spans nearly ____. ​

What terms refers to the action of wrapping around an object? ​

One hypothesis suggests that complex organic compounds first formed ____. ​

About how many million years ago did humans of the genus Homo first inhabit eastern Africa? ​

Organisms are more likely to be preserved under which condition? ​

When comparing the gene coding for cytochrome c in several species, it was noted that humans and chimpanzees share the identical amino acid sequence. This means that ____. ​

Learning About Human Biology

Chemistry of Life

Cells and How They Work

Tissues, Organs, and Organ Systems

The Skeletal System

The Muscular System

Circulation: the Heart and Blood Vessels

Blood

Immunity and Disease

The Respiratory System

Digestion and Nutrition

The Urinary System

The Nervous System

Sensory Systems

The Endocrine System

Reproductive Systems

Development and Aging

Cell Reproduction

Introduction to Genetics

Chromosomes and Human Genetics

DNA Genes and Biotechnology

Genes and Disease: Cancer

Principles of Ecology

Human Impacts on the Biosphere

Filters

The total numbers and kinds of genes in a given population is the ____.

Which species are our closest primate relatives?

Background extinction is a measure of the ____.

The scientist who developed the theory of natural selection was ____.

The founder effect is an important component of ____.

Fossils currently exist for about how many species?

Chance changes in a gene pool are known as ____.

What is NOT a viable explanation for the lack of fossil records for more species?

The lack of rust in the oldest existing rocks suggested that the primitive atmosphere had little or no ____.

Divergence may lead to ____.

Which species name means "upright man"?

Which species is the modern ancestor of modern humans?

The belief that humans arose in sub-Saharan Africa and then moved out is which model of evolution?

Which species is named for their ability to use tools?

The history of life on Earth spans nearly ____.

What terms refers to the action of wrapping around an object?

One hypothesis suggests that complex organic compounds first formed ____.

About how many million years ago did humans of the genus Homo first inhabit eastern Africa?

Organisms are more likely to be preserved under which condition?

When comparing the gene coding for cytochrome c in several species, it was noted that humans and chimpanzees share the identical amino acid sequence. This means that ____.