Please enable JavaScript.
Coggle requires JavaScript to display documents.
biology 13.1 (3A 2trimester midterm 2) - Coggle Diagram
biology 13.1 (3A 2trimester midterm 2)
Variation
Differences between individuals
GENETIC VARIATION
PHENOTYPIC VARIATION
differences between the observable characteristics of an individual within a species
discontinuous
blood group, flower color
distinct categories
with no intermediates
caused by genes
usually controlled by a
single gene
(Mendelian inheritance) and are less affected by the environment
continuous
height, mass
a range of values with
no distinct categories
caused by genes and environment
typically influenced by
multiple genes
(polygenic inheritance) and environmental factors
polygenes
Punnett square
Variation
Environment
=
not inherited
genotype
Independent assortments of chromosome
Crossing over
Random mating
Random fertilisation
Mutation
substitution, deletion and insertion of bases