Determining how species are related

Question 1

What does it mean when the common ancestor is recent

Answer 1

It means they are more closely related

Question 2

What are the 3 pieces of evidence used to determine how species are related

Answer 2

Anatomical, Physiological and DNA

Question 3

Anatomical evidence

Answer 3

Is the structure and form - used to determine the evolutionary links between species. Ex. forelimb similar but different

Question 4

Physiological evidence

Answer 4

Deals with physical + chemical functions including internal processes ( enzymes, proteins and cells/tissues)

Question 5

Example of physiological evidence

Answer 5

Guinea pigs release a unique insulin enzyme which makes it different from other rodents so it had to be classified in its own taxon

Question 6

DNA evidence

Answer 6

Nucleotide sequence cane be determined via technology. Can be isolated and compared to other species to determine evolutionary links.

Question 7

What is a phylogenic tree

Answer 7

Uses all 3 evidences to make a diagram showing relationships among species

Question 8

Base

Answer 8

• oldest common ancestral species

Question 9

Forks

Answer 9

• represent points where ancestral species evolved/changed over time to become 2 new species

Question 10

Antibiotics and evolutionary history

Answer 10

It is easier to develop an antibiotic if there is a common ancestor cause you can apply that formula to your new medication