Flashcards - NES General Science: Evolution

Flashcards - NES General Science: Evolution
1 / 17 0 0
17 cards in set
Evolution is change in the heritable characteristics of biological populations over successive generations
A hypothesis is a proposed explanation for a phenomenon
Polyploid cells and organisms are those containing more than two paired sets of chromosomes
Speciation is the evolutionary process by which reproductively isolated biological populations evolve to become distinct species
In biology, a species is one of the basic units of biological classification and a taxonomic rank
A zygote , is a eukaryotic cell formed by a fertilization event between two gametes
heritability of acquired characteristics
The inheritance of acquired characteristics is a hypothesis that physiological changes acquired over the life of an organism may be transmitted to offspring
Population genetics
Population genetics is a subfield of genetics that deals with genetic differences within and between populations, and is a part of evolutionary biology
founder effect
In population genetics, the founder effect is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population
convergent evolution
Convergent evolution is the independent evolution of similar features in species of different lineages
In the context of biology, homology is the existence of shared ancestry between a pair of structures, or genes, in different taxa
stabilizing selection
Stabilizing selection is a type of natural selection in which genetic diversity decreases and the population mean stabilizes on a particular trait value
Low hybrid viability
Hybrid inviability is a post-zygotic barrier, which reduces a hybrid's capacity to mature into a healthy, fit adult
Jean-Baptiste Lamarck
Jean-Baptiste Pierre Antoine de Monet, Chevalier de Lamarck , often known simply as Lamarck , was a French naturalist
gene pool
The gene pool is the set of all genes, or genetic information, in any population, usually of a particular species
Disruptive selection
Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values
sympatric speciation
Sympatric speciation is the process through which new species evolve from a single ancestral species while inhabiting the same geographic region

To unlock this flashcard set you must be a Member.
Create your account

Unlock Your Education

See for yourself why 30 million people use

Become a member and start learning now.
Become a Member

Already a member? Log In