Chapter 14: Natural Selection

Question 1

Type of natural selection in which organisms with phenotypes at one end of a spectrum are favored by the environment

Answer 1

Directional selection

Question 2

Differential survival and reproduction of individuals in response to environmental pressure that leads to change in allele frequencies

Answer 2

Natural Selection

Question 3

Change in allele frequencies in a population over time

Answer 3

Evolution

Question 4

A type of asexual reproduction I which one parental cell divides in two

Answer 4

Binary Fission

Question 5

The relative ability of an organism to survive and reproduce in a particular environment

Answer 5

Fitness

Question 6

Type of natural selection in which organisms with phenotypes at both extremes of the phenotypic range are favored by the environment

Answer 6

Diversifying Selection

Question 7

Chemicals that kill or slow the growth of bacteria by interfering with the function of essential cell structure

Answer 7

Antibiotics

Question 8

The coding of proteins which certain antibiotics can’t bond

Or

coding for proteins that disable antibiotics

Answer 8

Antibiotic resistance

Question 9

Staphylococcus aureus is a bacterium that has become resistant to most antibiotics that once killed them

Answer 9

Staph Infection

Question 10

Work by interfering with bacterium’s ability to create cell walls

Answer 10

Beta-lactams

Question 11

Pieces of DNA pass from one type of bacteria to another

Answer 11

Gene Transfers

Question 12

Process by which populations become better suited to their environment as a result of natural selection

Answer 12

Adaptation

Question 13

A type of natural selection in which organisms near the middle of the phenotypic range of variation are favored by the environment

Answer 13

Stabilizing Selection

Question 14

Group of organisms of the same species living together in the same geographic area

Answer 14

Population