AP®︎ Biology: Topic 7.2 Flashcards

Master key terms and definitions for Topic 7.2 of AP Biology – Natural Selection to help you prep for quizzes and the AP exam.

0%
13 cards total
13 not started
0 learning
0 almost done
0 mastered
Term

Phenotypic Variation

Definition

Differences in observable traits among individuals in a population.

1 / 13
Phenotypic Variation
Not Started

Differences in observable traits among individuals in a population.

7.2.A7.2.A.1
Natural Selection
Not Started

Differential survival and reproduction of individuals with heritable traits in a given environment.

7.2.A7.2.A.1
Heritable Variation
Not Started

Trait differences that can be passed from parents to offspring genetically.

7.2.A7.2.A.1
Selective Pressure
Not Started

An environmental factor that causes some phenotypes to survive or reproduce more successfully.

7.2.A7.2.A.2
Biotic and Abiotic Selective Pressures
Not Started

Biotic pressures come from living factors; abiotic pressures come from nonliving conditions.

7.2.A7.2.A.2
Fitness
Not Started

Relative ability to survive and produce fertile offspring in a specific environment.

7.2.A7.2.A.3
Molecular Variation and Fitness
Not Started

Differences in cellular molecules can change function and affect survival and reproduction.

7.2.B7.2.B.1
Genetic Diversity
Not Started

The variety of alleles and genotypes present within a population.

7.2.A
Peppered Moth Example
Not Started

Industrial soot favored dark moths over light moths by changing camouflage against predators.

7.2.A7.2.A.2
Flowering Time and Climate Change
Not Started

Warmer conditions can favor plants that flower earlier if timing improves reproduction.

7.2.A7.2.A.2
DDT Resistance in Insects
Not Started

Rare resistant insects survive insecticide exposure and pass resistance alleles to offspring.

7.2.A7.2.A.3
Sickle Cell Trait and Heterozygote Advantage
Not Started

In malarial regions, heterozygotes have the highest fitness, maintaining both alleles in the population.

7.2.A7.2.A.3
Phenotype
Not Started

An organism's observable traits produced by gene expression and environmental influences.

7.2.A