Microevolution Vocab

The number of times an allele occurs in a gene pool, compared to the total number of alleles in that pool for the same gene

• variation

• gene frequency

• gene pool

• genotype

Selection where one of the extremes is favored over the mean or the other extreme

• directional selection

• stabilizing selection

• gradualism

• disruptive selection

The disappearance between ¼ to ½ of all life forms on Earth in a short period of time

• disappearance

• genetics

• mass extinction

• variation

The alleles or variants that an organism carries (the combination)

• natural selection

• genotype

• variation

• phenotype

 Process by which a single species or small group of species evolve into several different forms that live in different ways.

• niche

• natural selection

• adaptive radiation

• punctuated equilibrium

  Selection where both extremes are favored over the mean

• stabilizing selection

• disruptive selection

• directional selection

• natural selection

Heritable characteristics that increase an organism’s ability to survive and reproduce in an environment

• adaptations

• genes

• phenotype

• genetic drift

The most recent individual that all organisms of a set are descended from

• species

• modern species

• common ancestor

• decendents

The allele that carries traits that will only be seen if it carries two copies of this allele

• phenotype

• dominant alleles

• genotype

• recessive alleles

1.     Type of reproduction that has the advantage of variation

• asexual reproduction

• binary fission

• budding

• sexual reproduction