Bio 150 Exam 1

Front 1

Sexual Selection

Back 1

Selection of traits that increase an individuals access to reproduction

Front 2

Intersexual selection

Back 2

Males evolve traits to attract females

Female choice

Sexual dimorphism

Front 3

Intrasexual selection

Back 3

Competition within genders

Males develop antlers to fight w other males (no female choice)

Front 4

Levels of Biodiversity

Back 4

Ecosystem, species, genetic

Front 5

Threats to Biodiversity

Back 5

Pollution, invasive species, over exploitation, habitat loss/degradation, climate change

Front 6

Darwin’s 5 Postulates

Back 6

1. Variation within a population

2. Some traits are inherited

3. Overproduction of offspring (more than habitat can support)

4. Differential Reproduction (well suited individuals survive and produce more offspring)

5. Survival/Reproduction NOT random (over time, favorable traits accumulate in a population)

Front 7

Pattern vs. Process

Back 7

Observed evolutionary change vs. mechanisms that produce pattern

Front 8

Adaptation

Back 8

Inherited trait that increases fitness

Front 9

Evolution

Back 9

Change in genetic composition from one generation to the next

Common descent (all life has a common ancestor)

Front 10

Vertical vs. Horizontal gene transfer

Back 10

Passed from parent generation vs. exchanged w another (non parent) cell

Front 11

Variation comes from

Back 11

Combo of alleles and mutations

Front 12

H-W Equilibrium

Back 12

1. No natural selection

2. No gene flow

3. No mutation

4. No genetic drift

5. No non-random mating

Front 13

HW

Back 13

Back (Definition)

Front 14

Artificial selection

Back 14

Directional selection by humans

Front 15

Modes of NS

Back 15

Back (Definition)

Front 16

Balancing selection

Back 16

Back (Definition)