Definitions Flashcards
(22 cards)
Species
a group of organisms that can freely interbreed to produce fertile offspring
Biodiversity
a measure of variation found in the living world
Habitat
where an organism lives
Species
a group of organisms that can freely interbreed to produce fertile offspring
Allele
a version of a gene
Locus
the position of a gene on a chromosome
Polymorphic gene locus
a locus that has more than two alleles
Species evenness
a measure of how evenly represented the species are
Species richness
a measure of how many different species are present
Monoculture
a crop consisting of one strain of one species
Keystone species
one that has a disproportionate effect upon its environment relative to its abundance
Soil depletion
the loss of soil fertility caused by removal of minerals by continuous cropping
Conservation in situ
carrying out active management to maintain the biodiversity in a natural environment
Conservation ex situ
conservation outside the normal habitat of the species
CITES
the Convention on International Trade in Endangered Species
Countryside stewardship scheme
a scheme to encourage farmers to manage parts of their land in a way that promotes conservation
Phylogeny
the study of the evolutionary relationships between organisms
Interspecific variation
the differences between species
Intraspecific variation
the variation between members of the same species
Correlation coefficient
a measure of how closely two sets of data are correlated - a value of 1 means perfect correlation
Standard deviation
a measure of the spread around a mean
Student t-tests
a test used to compare two means
