Chapter 13.2 Flashcards
Species consist of organisms that can interbreed and produce fertile offspring and are reproductively isolated form other species.
Biological
Useful in identifying boundaries between populations fo similar organisms. Relatively easy to evaluate for sexually reproducing species. Benefit of the _____ species concept.
biological
Species consist of organisms that can interbreed, are all descendants of a common ancestor, and represent independent evolutionary lineages.
genealogical
Most evolutionary meaningful species has its own unique evolutionary history. Can be used with asexually reproducing species.Benefit of the _____ species concept.
Genealogical
Species consist of organisms that share a unique set of physical characteristics that is not found in other groups of organisms.
Morphological
Easy to use in practice on both living and fossil organisms. Only a few key features are needed for identification. Benefit of the _____ species concept.
Morphological
All modern human populations descended from where?
Africa
When populations are isolated little gene flow occurs between them.
True
If an ____ appears in one population, it cannot spread to another.
allele
Isolated populations should contain some unique allele s
true
When a trait becomes more common in a population due to evolution, it is because the allele for that trait has become more common. This results in _____ ______.
allele frequency
The study of the effect of evolutionary change on allele frequencies is known as what?
population genetics
A ____ is a single base pair in the DNA sequence of humans that can differ from one individual to another r.
SNP
The 1% if the genome where there is variability is primarily made up of ______.
SNP’s
you can think of different DNA bases found at a particular SNP site as different alleles.
true
