Download Unit 3 Objectives Chapter 17 • Cite what biologists generally accept

Unit 3 Objectives
Chapter 17

Cite what biologists generally accept as evidence that supports evolution.

Explain the origin and eventual articulation of the views Darwin had on
evolution.

Understand as well as you can the ideas and evidence that scientists have
used to explain how life might have changed through time.

Define natural selection in terms of differential survival and reproduction.

Explain how people came to believe that the populations of organisms that
inhabit Earth have changed through time.

Identify the 5 assumptions of Hardy-Weinberg, and explain how the
equation is used to make predictions about evolving populations.

Explain how variation occurs in populations and how changes in allele
frequencies can be measured.

Describe how genetic drift leads to a loss in genetic diversity.

Describe the different types of selection mechanisms that help shape
populations and give examples of each type.
Chapter 18

Describe the different isolating mechanisms that give rise to speciation.

Define an adaptation and explain the role adaptive traits play in an
organism’s survival.

Compare and contrast the different types of speciation.
Chapter 19

Explain the difference between microevolution and macroevolution.

Describe the patterns that may lead to macroevolution.

Describe how taxonomic and cladistics systems are used to detail
evolutionary lineages.

Describe the various levels of taxonomy and how membership in the
different taxa occurs.

Identify and describe differences in different cladistics approaches.

Define morphological divergence and convergence and identify examples of
evidence for each type of event.

Describe the difference between homologous and analogous morphological
structures.

Describe how mutations to genes that direct development could lead to
morphological differences in adults of a species.
Chapter 20

Describe how life might have arisen on Earth approximately 3.8 billion years
ago.

Describe the hypotheses for the formation of organic molecules.

Describe the factors that led to the divergence of the prokaryotic and
eukaryotic lineages.

Describe the origins of cells and organelles.

Identify the key developments in the origin of metabolism leading to selfreplicating systems.

Discuss the endosymbiotic theory and give evidence supporting it.