Chapter 16

Question 1

The formation of new species is called ____________

Answer 1

Speciation

Question 2

Define gene pool.

Answer 2

Total genetic info available in a population

Question 3

The distribution of a particular trait is a ____________

Answer 3

Bell Curve

Question 4

What is microevolution? How is this different from macroevolution?

Answer 4

Small scale changes in Gene frequencies. Happens in few generations.

Question 5

What’s the sum of allele frequencies for any one characteristic in a population?

Answer 5

1

Question 6

What does hardy-Weinberg equation predict?

Answer 6

Genotype frequencies in a population

Question 7

What’s genetic drift?

Answer 7

Allele frequencies in a population change as a result of random events or chance

Question 8

What is the ultimate source of genetic variation diversity?

Answer 8

Mutation

Question 9

To which type of organism can the definition of species under the biological species concept not be applied?

Answer 9

• extinct

* asexual

Question 10

How can geography lead to reproductive isolation?

Answer 10

Physical barriers that can divide populations

Question 11

Directional selection?

Answer 11

Causes a shift in populations phenotype distribution

Question 12

Disruptive selection?

Answer 12

Occurs where both extremes are favored and intermediate are selected against

Question 13

Stabilizing selection?

Answer 13

Intermediate phenotype is favored and becomes more common

Question 14

What does morphology mean?

Answer 14

Internal and external structure and appearance of an organism

Question 15

Punctuated equilibrium?

Answer 15

Pattern of species formation in which periods of sudden speciation are proceeded and following by long periods with little speciation

Question 16

Gradualism?

Answer 16

Theory that states that a gradual change of species is due

Question 17

P= 0.5

Answer 17

P= 0.5 p2= 0.25
q= 0.5 2pq= 0.50
q2= 0.25

Question 18

q2= 0.16

Answer 18

p= 0.6 p2= 0.36
q= 0.4 2pq= 0.48
q2= 0.16