Studied by 6 people
content on diversity from 3.1
where does variation come from
sexual reproduction (mixing of two organisms’ dna, production of gametes)
mutations in dna
errors in dna replication
viral injection of foreign dna
environmental and epigenetics effects on gene expression
variation
difference in traits between individuals of the same species
morphological species concept
species as groups of organisms with shared morphological (physical) traits
variation as a defining feature of life
no two individuals are identical in all their traits
naming system of organisms
binomial nomenclature
parts to binomial nomenclature
genus first with capital letter
species second, lowercase
biological species concept
a species is a group of organisms that can breed and produce fertile offspring
geographical isolation for speciation
physical habitats such as rivers, oceans, mountains disjunct habitats
behavioural isolation for speciation
two populations are capable of interbreeding but have different behaviours such as courtship rituals
temporal isolation for speciation
two population reproduce/mate at different times
