genetic diversity
number of dirrent allels of genes in a population
alleles
variations of a particular gene - different dna base sequence
population
a group of organisms of the same species in particular space at a particular time that can interbreed
evolution
change in allele frequency over many generations , occuring through the process of natural selection
species
group of organism that can produce fertile offspring
phyolgentic classifcation system
species arranged into groups e.g taxes bases on their evolutionary orginas and relatships , uses a heirachy where there is no overlap of groups , smaller groups places within larger groups
biodiversity ,
variety of living organisms , can relatie to a range of habits , froma small local habitat to the earth
community
all populations of different species that live in an area
species richness
a measure of the number of different species in a community
index of diversity
decribes the relatship between , the number of species in a community , number of indivduls in each species
chromosome
long linear dna , its assoicated with histone protein , in the nucleus
gene
a sequence of dna nucletude base that code for a amino acid sequence of a polypeptide , fucntional rna
locus
foxed position of a gene occupies on a particular DNA molecule
triplet code
a sequence of 3 dna bases callled a triplet codes for a specifc amino acid
univeral
same base triplet codes for the same amino acid in all organisms
non overlapping
each base is part of only one triplet is read as discrete unit
degenerate
an amino acid can be coded fro mroe one base triplet
exon
base sequence of a gene coding for amino acid sequence
intron
base sequence of a gene that doesnt code for amino acids in eukorytic cells
genome
comeplte set of gene in a cell
