Chapter 17 C-Map

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Chapter 17 C-Map

Analogous

performing a similar function but having a different evolutionary origin, such as the wings of insects and birds

Alloploidy

an individual or strain whose chromosomes are composed of more than two genomes each of which has been derived more or less complete but possibly modified from one of two or more species

Autoploidy

an individual or strain whose chromosome complement consists of more than two complete copies of the genome of a single ancestral species

Allopatric Speciation

the eventual result of populations separated by a geographic or some other physical barrier

Hybridization

The mating between two species

Zygote

the first cell that results when a sperm fertilizes an egg

Postzygotic Isolation

Reproductive isolation after fertilization

preztgotic isolation

Reproductive isolation before fertilization

Reproductive Isolation

physiological, behavioral, and genetic processes that inhabit interbreeding

Biological Species Concept

a group of individuals that can breed together

Monophyletic

descended from a common evolutionary ancestor or ancestral group, especially one not shared with any other group

Phlygentic species concept

an evolutionary "family tree"

Evolutionary Species Concept

a species as members of populations that actually or potentially interbreed in nature, not according to similarity of appearance

Cryptic Species

Species that look almost identical but are very different in other traits

Diagnostic Traits

any trait that can form the basis for differentiation of the members of a certain species from other species

Morphology

the branch of biology that deals with the form of living organisms, and with relationships between their structures

Species Concept

the different ways in which a species is defined

Taxonomist

a scientist that classifies organisms into groups

Speciation

the splitting of one species into two or more species

Macroevolution

major evolutionary change. The term applies mainly to the evolution of whole taxonomic groups over long periods of time