38 terms


complete disappearance on an organism from Earth
local extinction of a species from an area
species is close to being extirpated
organism has special adaptation that allows them to live in a narrow niche
habitat destruction
rapid change to organisms living area usually with negative effects
non-native species
species that are introduced to an area they don't normally reside in
taking too many of one species from an area through hunting
artificial selection
selecting and breeding individuals with desirable traits to produce offspring with desired traits
an exact genetic replica of an organism
artificial insemination
sperm from desired male are utilized and inserted into females
in vitro fertilization
sperm and egg are united outside of womb and then inserted into female
genetic engineering
directly altering an organisms DNA
in-situ conservation
maintaining wild organisms in their natural environment
ex-situ conservation
maintaining organisms outside of their natural environment
seed bank
genetic storehouse of plants DNA
cell division in which the nucleus divides into nuclei containing the same number of chromosomes
(genetics) cell division that produces reproductive cells in sexually reproducing organisms
a characteristic that an organism can pass on to its offspring through its genes.
dominant trait
the trait observed when at least one dominant allele for a characteristic is inherited
recessive trait
Trait that is apparent when two recessive alleles for the characteristic are inherited.
incomplete dominance
one allele is not completely dominant over the other allele
threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next
Deoxyribonucleic acid
one of two alternate forms of a gene that can have the same locus on homologous chromosomes and are responsible for alternative traits
all of the living things and places on Earth
number of one type of species in an area
all of the different types of species in one area
classification system
kingdom, phyla, order, class, family, genus, species
includes mutualism, commenalism, parasitism
an organisms role in the environment, where it live, what it eats, who it interacts with
interspecies competition
competition between species for a resource
resource partioning
sharing a resouce or location between different species
differences between species which allows for greater success
natural selection
survival of the fittest, the "best" species survives to pass on its genes and reproduce successfully
heritable trait
acquired through your parents genes
non-heritable trait
aquired in your lifetime, a learned skill
continuous variation
a range of possibilities
discrete variation
either/or...you have it or you don't...