How Populations Evolve - Biology | Biology+

Course

Introductory Biology

Study Pack

Set 1: A View of Life

Set 2: Basic Chemistry

Set 3: The Chemistry of Organic Molecules

Set 4: Cell Structure and Function

Set 5: Membrane Structure and Function

Set 6: Metabolism: Energy and Enzymes

Set 7: Photosynthesis

Set 8: Cellular Respiration

Set 9: The Cell Cycle and Cellular Reproduction

Set 10: Meiosis and Sexual Reproduction

Set 11: Mendelian Patterns of Inheritance

Set 12: Molecular Biology of the Gene

Set 13: Regulation of Gene Expression

Set 14: Biotechnology and Genomics

Set 15: Darwin and Evolution

Set 16: How Populations Evolve

Set 17: Speciation and Macroevolution

Set 18: Origin and History of Life

Set 19: Taxonomy,systematics,and Phylogeny

Set 20: Viruses,bacteria,and Archaea

Set 21: Protist Evolution and Diversity

Set 22: Fungi Evolution and Diversity

Set 23: Plant Evolution and Diversity

Set 24: Flowering Plants: Structure and Organization

Set 25: Flowering Plants: Nutrition and Transport

Set 26: Flowering Plants: Control of Growth Responses

Set 27: Flowering Plants: Reproduction

Set 28: Invertebrate Evolution

Set 29: Vertebrate Evolution

Set 30: Human Evolution

Set 31: Animal Organization and Homeostasis

Set 32: Circulation and Cardiovascular Systems

Set 33: The Lymphatic and Immune Systems

Set 34: Digestive Systems and Nutrition

Set 35: Respiratory Systems

Set 36: Body Fluid Regulation and Excretory Systems

Set 37: Neurons and Nervous Systems

Set 38: Sense Organs

Set 39: Locomotion and Support Systems

Set 40: Hormones and Endocrine Systems

Set 41: Reproductive Systems

Set 42: Animal Development and Aging

Set 43: Behavioral Ecology

Set 44: Population Ecology

Set 45: Community and Ecosystem Ecology

Set 46: Major Ecosystems of the Biosphere

Set 47: Conservation of Biodiversity

Set 16 How Populations Evolve

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Set 16 How Populations Evolve

(Multiple Choice)

Free

Which of the following statements about natural selection are true? Select all that apply.

A)Directional selection occurs when one extreme phenotype in the population is favored.
B)Stabilizing selection favors all phenotypes equally.
C)Disruptive selection favors two extreme phenotypes.
D)Directional selection is most common in stable environments.

Answer

(Multiple Choice)

Free

A certain species of butterfly varies in color from white to dark blue.The birds found in the same area feed on the white or lightly colored butterflies,leaving butterflies that are darkly colored.This is an example of what type of selection?

A)stabilizing selection
B)disruptive selection
C)directional selection
D)artificial selection

Answer

(Multiple Choice)

Free

Variation within a population is maintained by

A)mutation.
B)genetic recombination due to fertilization.
C)gene flow.
D)All of the choices are correct.

Answer