Evolution Basics

Two organisms that are closely related would have

• very similar DNA sequences

• identical DNA sequences

• very few DNA sequences

• completely different DNA sequence

Tags

NGSS.MS-LS4-2

Some organisms that share a common ancestor have features that have different functions, but similar structures. These are known as

• vestigial structures

• unknown structures

• homologous structures

• fossilized structures

Tags

NGSS.MS-LS4-2

A fossil of an extinct dinosaur is found and the anatomy of the fossil is similar to that of modern birds. What could this mean?

• This is purely by chance and isn't significant

• The extinct dinosaur and modern bird share a common ancestor

• 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 predators and to capture food

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

The process of new species arising in response to geographic isolation is known as...

• Sympatric speciation

• Locality speciation

• Behavioral speciation

• Allopatric speciation

How do fossils demonstrate common ancestry?

• By evaluating their position in the fossil record

• By evaluating their functions

• By being their purpose in being

• By possessing similar anatomical structures

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What is a fossil

• a rock or mineral

• a living organism

• a DNA specimen

• the preserved remains of a once living organism

Tags

NGSS.MS-LS4-1

Which two species are more closely related

• C & F

• B & F

• D & F

• G & F

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

What do the similarities of these structures suggest?

• that these species share a common ancestor

• that these species grow at different rates

• that these species evolved slowly

• that these species lived a long time

Tags

NGSS.MS-LS4-2

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

• Fossils 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-ESS1-4

According to the diagram, which bird has the most similar DNA to a large tree finch?

• small tree finch

• medium tree finch

• large ground finch

• green warbler finch

Tags

NGSS.MS-LS4-2