LSUE Biology 1001
Biology 1001 Exam 3 LSUE Vidrine Exam
Study Questions and Answers 2026
Theodosius Dobzhansky
"Nothing in biology makes sense except in the light of evolution"
J.B.S. Haldane
God must have "an inordinate fondness for beetles"
Carl Sagan
Extraordinary claims require extraordinary evidence
The Origin of Species
Darwin's book
Charles Darwin
all true classification is genealogical; that community of descent is the hidden bond
which naturalists have been unconsciously seeking
30 Million
estimated number of different species on the planet.
Evolution
Change over time in populations and species
Microevolution and Macroevolution
two kinds of evolutionary studies
Gene pool
LSUE Biology 1001
,LSUE Biology 1001
variety of genes and alleles in a population
gene frequencies
Allelic
Genotypic
Phenotypic
Charles Darwin and Alfred Wallace
proposed natural selection
descent with modification
evolution proceeds through the branching of common descent-like a tree
Gradualism
Changes in populations are slow, steady, and stately-macroevolution is the
accumulation of microevolutionary steps.
Multiplication
evolution produces increasing numbers of new species
Tenets of Natural Selection
1. All populations/individuals are varied
2. Populations tend to grow exponentially in size
3. In nature, populations grow arithmetically in size
4. The difference b/w the tendency and the reality
is a result of Natural Selection
LSUE Biology 1001
, LSUE Biology 1001
5. Natural Selection can be measured by
determining survivability and reproductive
fitness
Misconception about evolution
1. only happened in the past
2. has a predetermined goal
3. Changes in environment cause mutations
needed to survive under new envrionmental
conditions
4. Individual organisms evolve
5. one species evolves from another(apes to man)
6. Alleles valuable to survival become dominant
artifical selection
human intervention in the form of selective breeding
natural selection
A natural process resulting in the evolution of organisms best adapted to the
environment.
sources of genetic variation
LSUE Biology 1001
Biology 1001 Exam 3 LSUE Vidrine Exam
Study Questions and Answers 2026
Theodosius Dobzhansky
"Nothing in biology makes sense except in the light of evolution"
J.B.S. Haldane
God must have "an inordinate fondness for beetles"
Carl Sagan
Extraordinary claims require extraordinary evidence
The Origin of Species
Darwin's book
Charles Darwin
all true classification is genealogical; that community of descent is the hidden bond
which naturalists have been unconsciously seeking
30 Million
estimated number of different species on the planet.
Evolution
Change over time in populations and species
Microevolution and Macroevolution
two kinds of evolutionary studies
Gene pool
LSUE Biology 1001
,LSUE Biology 1001
variety of genes and alleles in a population
gene frequencies
Allelic
Genotypic
Phenotypic
Charles Darwin and Alfred Wallace
proposed natural selection
descent with modification
evolution proceeds through the branching of common descent-like a tree
Gradualism
Changes in populations are slow, steady, and stately-macroevolution is the
accumulation of microevolutionary steps.
Multiplication
evolution produces increasing numbers of new species
Tenets of Natural Selection
1. All populations/individuals are varied
2. Populations tend to grow exponentially in size
3. In nature, populations grow arithmetically in size
4. The difference b/w the tendency and the reality
is a result of Natural Selection
LSUE Biology 1001
, LSUE Biology 1001
5. Natural Selection can be measured by
determining survivability and reproductive
fitness
Misconception about evolution
1. only happened in the past
2. has a predetermined goal
3. Changes in environment cause mutations
needed to survive under new envrionmental
conditions
4. Individual organisms evolve
5. one species evolves from another(apes to man)
6. Alleles valuable to survival become dominant
artifical selection
human intervention in the form of selective breeding
natural selection
A natural process resulting in the evolution of organisms best adapted to the
environment.
sources of genetic variation
LSUE Biology 1001
