Natural Selection & Experiments|Complete Questions
with A+ Graded Rationales Latest Updated 2026
Natural Evolution
Evolution by natural processes
Theistic Evolution
the idea that god guided evolution to make everything in the world
Creationism
the belief that a god created all creatures
What can experiments do
Replicate Observations
Control conditions
randomize subjects
Why do experiments replicate experiments and observations
Increases reliability of patterns
Verbal models vs mathematical models
Verbal models show understanding and connection between variables while mathematical
models show equations to show relationships about quantities
The ideas of Lamarck and the influence they had on Darwin
proposed inheritance of acquired characteristics
created a testable model of evolution
guided Darwin's thought about how finches evolved according to their environment
What are the assumptions necessary for natural selection to occur?
Heritable variation
Changes in reproduction
Passing of phenotypes
, How does natural selection differ from artificial selection?
Evolves over time based on environment changes.
Picking specific traits and breeding to recreate and duplicate them
Blending Inheritance and how it was a problem for Darwin (3)
Phenotypes blend during reproduction
Overtime there would be no variation among individuals and would become homogeneous over
generations
Scientists were wary of Darwin's model because it contradicted this theory
Thinking about bacteria, how does heritability of traits, random mutation, and natural selection
play a role in evolution of a population
Bacteria needed to evolve in order to be resistant to antibiotics
Mutation occurred and allowed some organisms to be resistant to bacteria and those traits
were passed down through generations
The generations with the gene survive and those without die off
Treatment Group
The group getting experimented on
Control Group
the variable(s) kept constant
independent variable
variable that is manipulated
dependent variable
The measurable effect, outcome, or response from the independent variable
Sample Size
The number of subjects used in an experiment or study. Generally, the larger the better.
Theoretical Model