Factors Affecting Genetic Variation-Standard Bio 4.3

Question 1

What do scientists need to look at before developing an argument?

Revolt · Accepted Answer

The validity of data, claims, hypotheses, and observations.

Question 2

Whales have what seem like remnants of a pelvis and femur, as shown here.What are these structures an example of?

Revolt · Accepted Answer

vestigial structures

Question 3

Dogs have a reduced nonfunctional digit on their paws known as a dewclaw. What is this an example of?

Revolt · Accepted Answer

vestigial structure

Question 4

Error

Revolt · Accepted Answer

jellyfish, reptiles, mammals

Question 5

A scientist makes the argument that she has found DNA evidence that shows that evolution does not exist. What would her evidence have to show for her to be correct?

Revolt · Accepted Answer

Weak genetic similarities in closely related organisms and strong genetic similarities in distantly related organisms.

Question 6

Which structures are similar in function, but do not indicate that the organisms are related?

Revolt · Accepted Answer

analogous structures

Question 7

Studying the anatomy of different organisms allows scientists to determine how different species have evolved over time. Which type of anatomic structure are bird wings and butterfly wings when compared to each other?

Revolt · Accepted Answer

analogous

Question 8

Siblings have similar traits because they inherit those traits from a common ancestor. How is this similar to some evidence for evolution?

Revolt · Accepted Answer

Similarities can be seen among related organisms, which shows common ancestry.

Question 9

Which of these statements best sums up evolution?

Revolt · Accepted Answer

change in a population through genetic variation over time

Question 10

Which kind of evidence studies mineralized bone, footprints, or organisms trapped in amber to determine common ancestry?

Revolt · Accepted Answer

fossils

Factors Affecting Genetic Variation-Standard Bio 4.3 Answers

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