Question 1

Earth's history spans about 4.5 billion years.

Accepted Answer

A) True 
 B)False

Question 2

If an isotope's half-life is 100 years:

Accepted Answer

A)  That isotope will no longer exist in 50 years
B)  That isotope will no longer exist in 200 years
C)  In 50 years only half of the atoms in a sample of that isotope will remain
D)  In 100 years only half of the atoms in a sample of that isotope will remain
E)  In 200 years only half of the atoms in a sample of that isotope will remainF) A) and C)
G) C) and E)

Question 3

The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.

Accepted Answer

A) True 
 B)False

Question 4

If many genes from two species differ in about 5% of their bases and substitutions occur at an estimated rate of 5% per one million years then:

Accepted Answer

A)  About 1 million years have passed since the two species diverged
B)  About 5 million years have passed since the two species diverged
C)  About 10 million years have passed since the two species diverged
D)  About 20 million years have passed since the two species diverged
E)  About 50 million years have passed since the two species divergedF) B) and E)
G) A) and E)

Question 5

The femur in a snake and pelvis in a whale are examples of:

Accepted Answer

A)  Homologous structures
B)  Analogous structures
C)  Homeotic structures
D)  Vestigial structures
E)  Heterologous structuresF) None of the above
G) C) and E)

Question 6

Natural selection acts on:

Accepted Answer

A)  Individuals
B)  Communities
C)  Species
D)  Genotypes
E)  AllelesF) C) and D)
G) B) and C)

Question 7

Recent molecular evidence has confirmed that hippos are more closely related to pigs than to whales.

Accepted Answer

A) True 
 B)False

Question 8

In a fruit fly embryo,the homeotic gene Antp determines where legs would grow.When the promoter of Antp is mutated,flies end up with legs growing out of their head instead of antennae.In this mutation:

Accepted Answer

A)  Antp must be turned off in the body
B)  The Antp protein is no longer functional
C)  Antennae grow where the legs would normally be found
D)  Antp must be turned on in the head
E)  Antp is turned off in the headF) B) and D)
G) C) and D)

Exam 12: Evidence for Evolution

If an isotope's half-life is 100 years:

Correct Answer
verified

Earth's history spans about 4.5 billion years.

Correct Answer
verified

The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.

Correct Answer
verified

In a fruit fly embryo,the homeotic gene Antp determines where legs would grow.When the promoter of Antp is mutated,flies end up with legs growing out of their head instead of antennae.In this mutation:

Correct Answer
verified

Natural selection acts on:

Correct Answer
verified

The femur in a snake and pelvis in a whale are examples of:

Correct Answer
verified

Recent molecular evidence has confirmed that hippos are more closely related to pigs than to whales.

Correct Answer
verified

If many genes from two species differ in about 5% of their bases and substitutions occur at an estimated rate of 5% per one million years then:

Correct Answer
verified

Exam 12: Evidence for Evolution

If an isotope's half-life is 100 years:

Correct AnswerverifiedShow Answer

Earth's history spans about 4.5 billion years.

Correct AnswerverifiedShow Answer

The techniques used to study molecular evolution are based on the comparison of nucleotide and amino acid sequences among species.

Correct AnswerverifiedShow Answer

In a fruit fly embryo,the homeotic gene Antp determines where legs would grow.When the promoter of Antp is mutated,flies end up with legs growing out of their head instead of antennae.In this mutation:

Correct AnswerverifiedShow Answer

Natural selection acts on:

Correct AnswerverifiedShow Answer

The femur in a snake and pelvis in a whale are examples of:

Correct AnswerverifiedShow Answer

Recent molecular evidence has confirmed that hippos are more closely related to pigs than to whales.

Correct AnswerverifiedShow Answer

If many genes from two species differ in about 5% of their bases and substitutions occur at an estimated rate of 5% per one million years then:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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