Chapter 2 Flashcards
What is evolutionary change?
Change over time and space.
What is testable?
A set of independent hypotheses suppose one another.
What is unified?
Explains a wide range of material evidence.
What is fruitful?
Suggests new possibilities for future research that explains biological diversity.
What is variations evolution?
Emphasizes importance of differences and not just similarities within a species.
What is Theory of common Origin?
All similar living species have a common origin.
What is Theory of Evolution by Natural Selection?
Based on the principles of variation, heredity, and natural selection.
What is adaptation?
Traits shaped by natural selection for the function they currently perform.
What is exaptation?
Traits that were shaped by natural selection for one function but used for another.
What was pangenesis?
A theory of heredity favored by Darwin.
Parent generated multiple particles reflecting their unique traits yet offspring only get a few particles.
What is Mendelian inheritance?
Views heredity as based on nonblending, single - particles genetic inheritance.
What is dominant traits?
Expressed in an organism.
What is a recessive trait?
Not express in an organism.
What is principal of segregation?
Individuals receive one gene for each trait from each parent.
What is principle of Independent Assortment?
Each pair of genes separate independently of every other pair when egg and sperm (Germ) sex cells are formed.
What is alleles?
Represent all the different forms a gene might take.
What is genotype?
Refers to the genetic structure of an organism and is encoded in its DNA.
What is phenotype?
The visible expression of the genotype and is influenced during development by the environment.
What is norm or Reaction?
A way of displaying phenotypes for a specific genotype in different environments.
What is Theoretical pluralism?
Recognizes that a variety of processes operate at different levels to create simila
