variation
the differences observed between individuals of the same species
continuous variation
Shows a range of phenotypes with intermediates
continuous variation example
Height, weight, hair color
discontinuous variation
Shows a few distinct phenotypes with no intermediates.
discontinuous variation examples
-blood groups
-gender
-attached vs free lobe
mutation
change in the DNA base sequence of a particular gene
What can cause the formation of a new allele?
change in the DNA base sequence of a gene
natural selection
the process where organisms that are better adapted to their environment are more likely to survive and reproduce.
selective breeding
when humans choose which organisms reproduce based on desirable traits over many generations
example of natural selection
antibiotic-resistant bacteria
