Evolution
What does evolution act on?
Natural Selection acts on a ______________first.
What is a population?
An organism matches its surroundings in order to hide
What is Camouflage?
A type of selection that favors one extreme phenotype over others.
What is directional selection?
A theory (explanation) supported by evidence for how populations change over time
What is evolution?
The theory that evolutionary change occurs in rapid bursts followed by long periods of stability.
What is punctuated equilibrium?
A variation in an organism that helps it survive
What is Adaptation?
What are homologous structures?
Structures that are similar in different species due to common ancestry.
The theory that evolution occurs slowly and steadily over long periods.
What is Gradualism?
Charles Darwin
Who is the father of Evolution?
How is the theory of natural selection different from Lamarck's theory?
What is Lamarck said that organisms acquire traits during their lifetime and then pass them on to their offspring
Give an example of a physical adaptation in animals.
What is the thick fur of polar bears, which helps them retain heat in cold environments. Answers will vary.
Evolution can only occur when what happens?
What is Genetic Variety? or Overproduction?
How does Darwin's finches illustrate natural selection?
What is different beak shapes of finches evolved to adapt to available food sources on various islands.
The ability of an organism to survive and reproduce in its environment.
What is Fitness?
In embryology, the embryos are very similar to each other
What is a common ancestor?
The theory that an early cell engulfed a prokaryotic cell.
What is Endosymbiotic theory.
Two different organisms are alike, they are said to be __________________(s)
What is a Common Ancestor?
How does natural selection lead to evolution?
What is it increases the frequency of advantageous traits in a population over generations.
A type of selection that favors one extreme phenotype over others.
What is Disruptive selection?
What is the significance of transitional fossils in the study of evolution like the ones we watched in the documentary Inner Fish?
What is transitional fossils provide evidence of intermediary forms that exhibit traits common to both ancestral and descendant groups, demonstrating the gradual changes that occur over time and supporting the theory of evolution.
The endosymbiotic theory attempts to explain the presence of what two organelles that once could live independently?
What is Mitochondria and Chloroplast.