Which type of fossil is considered a trace fossil?

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• Question 1

3 out of 3 points

 

Which type of fossil is considered a trace fossil?

 

 

 

• Question 2

3 out of 3 points

 

An unusual, worldwide formation of sedimentary rock called the K–Pg boundary sequence contains rare elements that are associated with a(n) ____.

 

 

 

• Question 3

3 out of 3 points

 

An example of morphological divergence is the wing of a bat and the ____.

 

 

 

• Question 4

3 out of 3 points

 

Darwin incorporated Malthus’ idea that _____ into his theory of evolution.

 

 

 

• Question 5

3 out of 3 points

 

Lyell’s theory of uniformity proposed that ____.

 

 

 

• Question 6

3 out of 3 points

 

A small Dutch population settled in South Africa in the 17th century and became known as Afrikaners. By chance, a few Dutch settlers carried the gene for Huntington’s disease. Today, Huntington’s disease occurs at a relatively high frequency in this population. This is an example of ____.

 

 

• Question 7

3 out of 3 points

 

Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the best nests. This is best described as an example of ____.

 

 

• Question 8

3 out of 3 points

 

Over evolutionary time, flowering plants have evolved colors, odors, and nectar that attract pollinating insects and the insects have evolved mechanisms that detect the changes in plants and to better collect pollen. This is an example of ____.

 

 

• Question 9

3 out of 3 points

 

In the 16th century, a Spanish ship explored a Pacific Island that had a small mountain range separating it. Mice that were on the ship escaped onto the island on both sides of the mountain range. After decades of separation the two populations developed different numbers of chromosomes, resulting in reproductive isolation that prevented any future interbreeding. This speciation event is an example of ____.

 

 

• Question 10

3 out of 3 points

 

The observation that female lions prefer male lions with darker manes is an example of ____.

 

 

 

• Question 1

3 out of 3 points

 

The genomes of closely related species are more similar than distantly related species because _____.

 

 

 

• Question 2

3 out of 3 points

 

Biogeography is the study of the ____.

 

 

 

• Question 3

3 out of 3 points

 

Morphological divergence ____.

 

 

 

• Question 4

3 out of 3 points

 

Master genes that affect development tend to be highly ____; therefore, similarities in patterns of embryonic development reflect shared ancestry that can be evolutionarily ancient.

 

 

 

• Question 5

3 out of 3 points

 

The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950’s led to acceptance of the theory of ____.

 

 

 

• Question 6

3 out of 3 points

 

A female horse can mate with a male donkey but they will produce a mule that is sterile. This is an example of what type of isolation mechanism?

 

 

• Question 7

3 out of 3 points

 

With the extinction of the dinosaurs 65 million years ago, multiple niches that the dinosaurs once filled opened up and allowed mammals the opportunity to evolve and exploit those niches. This is an example of ____.

 

 

• Question 8

3 out of 3 points

 

The emergence of hundreds of Hawaiian honeycreeper species from a single flock introduced to this island archipelago millions of years ago is an example of ____.

 

 

• Question 9

3 out of 3 points

 

____ occurs when a change in chromosome number takes place in a single generation.

 

 

 

• Question 10

3 out of 3 points

 

What is one result of the bottleneck effect?

 

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