Lesson 8- Patterns Of Evolution Flashcards
(Blank) refers to large-scale evolutionary patterns and processes that occur over long periods of time.
Macroevolution
Six important topics in macroevolution are:
• extinction
• adaptive radiation
• convergent evolution
• coevolutio
• punctuated equilibrium
• changes in developmental genes
Extinction
More than (blank) of all species that have ever lived are now extinct.
99%
What effects have mass extinctions had on the history of life? Mass extinctions have:
• provided ecological opportunities for organisms that survived
• resulted in bursts of evolution that produced many new species
(Blank) (blank) is the process by which a single species or a small group of species evolves into several different forms that live in different ways.
For example, in the (blank) (blank) of (blank) (blank), more than a dozen species evolved from a single species.
Adaptive radiation, adaptive radiation of Darwin’s finches
Different organisms undergo adaptive radiation in different places or at different times but in similar environments.
The process by which unrelated organisms come to resemble one another is called (blank) (blank). Results in (blank) (blank).
convergent evolution, analogous structures
Sometimes organisms that are closely connected to one another by ecological interactions evolve together.
The process by which two species evolve in response to changes in each other over time is called (blank).
coevolution
In (blank) (blank)
Darwin felt that biological change was slow and steady, an idea known as (blank).
Punctuated Equilibrium, gradualism
(Blank) (blank)
is a pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change.
Punctuated equilibrium
(Blank) (blank) are the master control genes of body layout.
Hox Genes
