biodiversity Flashcards
biodiversity defenition
the number of species and the number of individuals in each spiecies in a specific area
why is there more biodiversity at the equator
higher levels of light intenstiy
more photosynthesis
more plants
more herbivores
more carnivores
3 reaosns why biodiversity change overtime
- succession
- natural selection
- human influence
potential negative impacts of reduce biodiversity (3)
- raw materials for industry
- chemicals for medicinal drugs
- charecteristics to breed into crops
cofia checkio sut i neud yr simpsons index thingy gal!!
example of polymorphism
eye colours
blood groups
what is the link between polymorphism and biodiversity
more alleles
more variation
more biodiversity
what is locus
gene position on a chromosome
what is the gene position on a chromosome
locus
what does locus show
polymorphism
when does locus show polymorphism
if the have 2 more alleles
relationship between alleles and biodiversity
more alleles the gene has the greater biodiversity
relevance of proportion of alleles and biodiversity
low relative biodiversity if the frequency of one allel is much greater than the frequency of other allels within the gene pool of a population
how do you asses biodiversity
dna profiling
what are single base differences called
SNP
single nucleotide polymorphism
what does natural selection do with biodiversity
increases but can also reduce it (polar bear habitat loss)
whats the name of regions of DNA variation which repeats often
hyper variable regions (HVR)
mutated / evolved more
how many steps for natural selection
6
6 steps of natural selection
1 - mutation
2- variation
3 - competitive advantage
4 - survival of the fittest
5 - reproduction
6 - pass advantageous alleles to offspring
what are the 3 types of adaptions
anatomical traits
physiological traits
behavioural traits
what is the significance of anatomical traits
changes to anatomy of the body
examples of anatomical traits
streamlined bodies
what is physiological traits
causes changes to occur to the ‘body’ of the organism
example of physiological traits
reset body temp to be lower when hybernating
happens every year so they can survive
examples of behavioural traits
eg mating rituals
more different ________ the more th4e viodiversity
single nucleotide polymorphisms
hyper variable regions
whats the name of the king philpi groups
taxonomic groups
5 kingdoms
prokaryotae
animalia
