Evolution and Adaptation Flashcards
What is the genetic diversity
Number of different alleles of genes in a population
When does natural selection occur
when their is GD within a population
What does natural selection lead to
Natural selection is the process that leads to evolution
What is evolotuion
The change in allele frequency over many generations in a population
What are the better adaptations that natural selection leads to
anatomical, physiological or behaviour
What is anatomical adaptation
physical or structural adaptation
what are behavioural adaptation
change in what an organism does
What is a pshiological adaptation
change in the internal functioning
different chemical reactions in the body
What does the Niche mean
niche means the ‘role’ of the organism in the community
What is gentic varitaion?
differences in the gentic code
How does genetic variation occur?
when individuals in the same species have different allels
What are allels
alleles are differnet versions of the same gene
What cause genetic variation?
Mutations
Recombination
Independent segregation
Random fertilisation
What are the two types of variation that give rise to phenotypic variation?
Genetic variation
Environmental variation
