What are the most important characteristics of analogous structures?

Structures that perform the same function

Structures that perform different functions

Observe the two fish in the image. The cave fish and minnow are genetically related to each other and are similar in many ways. The cave fish lives very deep in the ocean where there is no light. It has only the remnants of eyes and is blind. Minnows live in shallow waters where the water has light. Their eye sight is important for their survival. Which statement below best describes these two fish?

The DNA of the cave fish has changed over time to differ from the minnow. Since there is no light where the cave fish lives, it was not necessary to have working eyes. Over time, mutations occurred which proved to improve the survival of the cave fish, which is why they are now blind and have only physical remnants of eyes.

The DNA has not mutated over time and despite all of the evidence that suggests these two are genetically similar, one has eyes and the other does not so they must not be related.

Cave fish must have been attacked by predators, which is why they only have the remnants of eyes.

The fossil record help scientists

better understand the kinds of organisms that lived in the past

better understand how the environment has changed over time

better understand how organisms have evolved over time

Which of the following are homologous structures?

legs on a beetle and legs on a cat

A fossil of an extinct dinosaur is found and the anatomy of the fossil shows similarities to that of a bird. What could this mean?

The extinct dinosaur and modern bird share a common ancestor

This is purely by chance and isn't significant

All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today

Dinosaurs choose to fly, and evolved into birds to escape predation and capture food

Charles Darwin traveled to the Galapagos Islands and studied a variety of species including tortoises, finches, and mockingbirds. Which type of evidence was he NOT able to use to form and support his theory?

Biogeography (where organisms live)

Scientists tested a bat, a dog, a snake, and a human to see how their amino acids differed in a specific protein. This is a form of ...

Evidence from molecular biology

Evidence from vestigial structures

Evidence for Evolution Berkley

Authored by Charles Martinez

Biology

9th Grade

NGSS covered

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31 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The most recent ancestral form or species from which two different species evolved is known as ________________________.

a common ancestor.

an embryonic stage.

development.

evolution.

Tags

NGSS.HS-LS4-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Common ancestry relates to evolution because

evolution only happens when there are common ancestors.

Common ancestors make evolution happen more quickly.

evolution can never take place with common ancestors.

the more two organisms have in common, the more recent is their common ancestor during their evolution.

Tags

NGSS.HS-LS4-1

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In the the third embryonic stage (bottom row), mammal embryos _____

have more characteristics in common with each other than with reptiles or birds.

are still hard to tell from reptiles and birds.

have the same features as fish, reptiles, and birds.

do not have tails.

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of evidence is represented in the picture above:

Fossils

Vestigial Structures

DNA

Homologous Structures

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of evidence is shown in the image above?

Fossils

Vestigial structures

Homologous Structures

DNA

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What type of evidence are shown in the picture above?

Fossils

Embryology

Homologous Structures

Vestigial Structures

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

Fossil A and C are the same age

Fossil B is older than fossil C

Fossils A is older than fossil B

Fossil D is older than fossil C

Tags

NGSS.MS-LS4-1

NGSS.MS-ESS1-4

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Evidence for Evolution Berkley

The most recent ancestral form or species from which two different species evolved is known as ________________________.

Common ancestry relates to evolution because

In the the third embryonic stage (bottom row), mammal embryos _____

What type of evidence is represented in the picture above:

What type of evidence is shown in the image above?

What type of evidence are shown in the picture above?

The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?

Body parts similar in structure and origin

A category of structures that have a similar function, but are structurally different.

What type of structure does this image illustrate?

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