Upgrade to remove ads
Ch. 11 Biology Terms
Terms in this set (24)
the combined alleles of all of the individuals in a population.
is a measure of how common a certain allele is in a population.
bell-shaped curve, having the highest frequency in the middle. Occurs when natural selection is not acting on a population for a certain trait.
process which can occur over a few generations, in which a population's allele frequencies change in any way.
occurs when natural selection selects for individuals with one extreme phenotype.
occurs when natural selection selects for individuals with the intermediate phenotype.
occurs when natural selection selects for individuals with both extreme phenotypes.
the change in allele frequencies due to change. Causes loss of genetic diversity in a population.
greatly reduces the size of a population.
genetic drift that occurs after a small number of individuals colonize a new area.
occurs when certain traits increase mating success.
Hardy- Weinberg equilibrium
occurs when there are no changes in allele frequencies for a certain trait from generation to generation. Rarely occurs in normal populations.
species from two populations can no longer mate successfully, for any reason.
the rise of 2 or more species from one existing species.
movement of alleles from one population to another.
separate populations with different courtship or mating rituals.
separates populations with physical barriers so that members of the dame population no longer have contact with each other.
separates populations with factors of time, such as when one population reproduces in the spring and and another reproduces in the summer. (Timing in reproduction).
Process in which unrelated species evolve similar traits while adapting to similar environments.
Process in which closely related species become more and more different as they adapt to different environments.
process in which two species evolve in response to changes in each other, over many generations.
The elimination of a species from Earth.
pattern of evolution that is sen in the fossil record. Consists of short periods with lots of evolutionary activity, followed by long periods with much less evolutionary activity.
the diversification of one ancestral species into many descendent species.
THIS SET IS OFTEN IN FOLDERS WITH...
Holt McDougal Biology - Ch 12 (vocabulary)
Chapter 12 lesson 1,2 and 3
Biology Chapter 12 History Of Life Vocab
Geography chapter 13, lesson 1, 2, and 3
YOU MIGHT ALSO LIKE...
Chapter 11 Biology terms
Chapter 11 Vocab
The Evolution of Populations: Vocabulary Practice
Evolution Of Populations
OTHER SETS BY THIS CREATOR
Ap Lit Vocab #1
Slaughterhouse 5 Vocab
Of Mice and Men Vocab #1
American Vocab Unit 3
OTHER QUIZLET SETS
BME350: Week 10 Renal