Practical #1 Exam: Systematics

Question 1

Systematics

Answer 1

• 3 domains
• 6 kingdoms
• 28 phyla
• used to follow evolutionary trends to add understanding and memorization

Question 2

Monophyletic Group

Answer 2

• all members trace back to a recent common ancestor

Question 3

Polyphyletic Group

Answer 3

• members do not trace back to their
  most recent common ancestor
• more work is needed to refine evolutionary
  relationships

Question 4

Homologous

Answer 4

• similarity derived from common ancestry

Question 5

Analogous

Answer 5

• artificial similarity not
  based on common ancestry
• the independent origin of similar trait
  from a dissimilar ancestral condition.

Question 6

Ex. of Analogous

Answer 6

-same function but different evolutionary lineage.
- have different functions.
- evolutionary lineage.
- different evolutionary lineage.

Question 7

What is the goal of phylogenic trees?

Answer 7

• to have lineage trace back to common ancestor without including unrelated species

Question 8

What information should you use to determine if something is homologous or analogous?

Answer 8

• kingdom designation
• x-ray
• ratio of appendage to torso
• outer covering composition
• ribosomal sequences