Master this deck with 46 terms through effective study methods.
Imported from Quizlet
Differences between individuals of the same species
Range of phenotypes with intermediates
Genes and environment
Histogram or line graph
Height, body mass
Distinct phenotypes with no intermediates
Genes only
Bar chart
ABO blood group, seed shape/colour
Measure many individuals and plot histogram
Count categories and use bar chart
Genetic change
Random change in DNA base sequence
Ionising radiation and some chemicals
Creates new alleles
Mutation, meiosis, random mating, random fertilisation
Inherited feature aiding survival and reproduction
Plants adapted to hot, dry conditions
Reduces evaporation
Store water
Trap moist air, reduce water loss
Smaller surface area, less transpiration
Reduce water loss
Access scarce water
Plants adapted to living in water
Little need to prevent water loss
Buoyancy and light access
Large surface area for gas exchange
Gas exchange above water
Anchorage only
Water absorbed directly
Better-adapted organisms survive and reproduce
More offspring produced than can survive
Become more common over generations
Population becomes better suited to environment
Resistant bacteria survive and reproduce
Humans breed organisms with desirable traits
Select → breed → repeat
Increased desired traits
Environment
Humans
Random vs controlled
Slow vs faster
Higher vs lower
Hot, dry conditions; thick waxy cuticle; succulent leaves/stems; hairy or rolled leaves; spines/needles instead of leaves; few stomata; sunken stomata; stomata close in hot conditions; deep or spreading roots
Living in abundant water; thin waxy cuticle; floating leaves with air spaces; feathery leaves; stomata on upper surface; reduced root system; limited xylem