Molecular evidence of evolution

The base sequence in the DNA of chimpanzees and humans is 99% similar. What type of evidence for evolution is this?

• molecular evidence

• comparing anatomy

• comparing embryos

• fossil evidence

Tags

NGSS.HS-LS4-1

When you compare DNA or proteins to support evolution, you are using what kind of evidence?

• anatomical evidence
• molecular evidence
• fossil evidence

Tags

NGSS.HS-LS4-1

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

NGSS.HS-LS4-1

If two organisms have similar traits of DNA they probably share a common...

• ancestor

• environment

• population

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

The amino acid sequence for a protein was compared between three species. Species A and B had 2 differences, Species A and C had 6 difference, & Species B and C had 4 differences. Which species are most closely related?

• A and B

• A and C

• B and C

• All species are equally related

Tags

NGSS.MS-LS4-2

This table shows the number of differences in amino acids of a protein when compared to humans. Which species is LEAST closely related to humans?

• Chimpanzee

• Fruit fly

• Horse

• Pigeon

• Rattlesnake

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-5

Why does more similar DNA between two species indicate a more recent common ancestor?

• DNA mutations decrease over time

• DNA mutations increase over time

• DNA does not mutate

• Similar DNA does NOT indicate a more recent common ancestor

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

True or False: Species are more closely related if they have a more recent common ancestor.

• True

• False

Tags

NGSS.HS-LS4-1

Why can similarities in amino acid sequences be used to determine species relatedness?

• You are born with all of you amino acids

• amino acids control which DNA is used to build you

• DNA codes for amino acid sequences, so similar amino acid sequences indicate similar DNA

• amino acids cannot provide valid data on species relatedness

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2