Cell cycle and mitosis

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Cell cycle and mitosis
EVOLUTION REVIEW
Which of the 4 processes of Evolution by
Natural Selection does the definition
describe?
Individuals within a species will fight for
limited resources.
Competition (Struggle for Existence)
What are the 5 main pieces of evidence
supporting Darwin’s theories?
1. Fossils
2. Embryological Similarities
3. DNA
4. Structural (Anatomy) Similarities
5. Biogeography
What line of evidence for evolution is this a
picture of?
DNA
How do Fossils provide evidence for
evolution?
Fossils show gradual change over time.
They are representative of species that
once existed, pointing to descent from a
common ancestor
How does Artificial Selection connect to
evolution?
Humans breeding other animals and plant
for desirable traits is altering the allele
frequencies and changing the species over
time.
What is the vocab word?!
Inherited changes that allow organisms to be
better suited to survive and reproduce in a
particular environment.
Adaptations
What line of evidence for evolution is this a
picture of?
Fossils
How does Biogeography provide
evidence for evolution?
Species which live closer together have
more in common, despite environmental
differences, than those in the same
environment but far away. This points to
gradual changes over time.
What is the vocab word?!
All the different variations of genes in an
interbreeding population
Gene Pool
Define:
Analogous Structures
Structures that look different internally but
serve similar functions
What is the vocab word?!
The best adapted organisms within a particular
environment will out-compete other organisms
that aren’t as fit.
Survival of the Fittest
Which of the 4 processes of Evolution by
Natural Selection does the definition
describe?
Differences in the inherited characteristics
of species that get passed down to the
next generation.
Genetic Variation
Identify the type of Natural Selection and how the
population will change.
This type of Natural Selection favors the average traits in a
population while the extreme traits are selected against.
Stabilizing
How will this population change over time?
There will be an increase in individuals with the
intermediate/average traits and a reduction in the
individuals with the extreme traits
How does DNA provide evidence for
evolution?
The more amount of DNA that 2 species
have in common, the more closely they are
related. This points to common ancestors.
What line of evidence for evolution is this a
picture of?
Embryological Similarities
How do structural similarities in
anatomy provide evidence for evolution?
Similarities in physical features shows
descent from a common ancestor
What is a derived characteristic shared
by Tigers and Lizards?
A
B
C
D
E
F
Jaws, Lungs, and Amniotic Membranes
Who is Charles Darwin?!
The Father of Evolution by Natural Selection
How do Embryo similarities provide
evidence for evolution?
The more closely related species are, the
more similar they will look (and for a
longer period of time) during their
embryological stages.
What is the vocab word?!
The physical traits and behaviors that enable
organisms to survive and reproduce in their
environment.
Fitness
Which of the 4 processes of Evolution by
Natural Selection does the definition
describe?
The organisms with the traits favored by the
environment will have a higher probability of
surviving and reproducing to pass on their traits
to the next generation
Differential Survival and Reproduction
How does the Bottleneck Effect result
in genetic drift?
An event causes a population to be
greatly reduced, which reduces the
genetic variation
What type of structure is shown?
Analogous
Which of the 4 processes of Evolution by
Natural Selection does the definition
describe?
More offspring are produced than can
survive.
Overproduction of Offspring
Identify the type of Natural Selection and how the
population will change.
During this type of Natural Selection, both extreme
traits in a population are both selected for.
Disruptive
How will this population change over time?
There will be a reduction in the individuals with the
intermediate/average trait
Define:
Vestigial Structures
Remnants of structures that used to be
functional in their ancestral form but,
today, serve little to no function
Identify the type of Natural Selection and how the
population will change.
In this type of Natural Selection one extreme trait in a
population is selected against.
Directional
How will this population change over time?
The population will shift towards the other extreme
What is the closest common ancestor of
gorillas and salamanders?
A
B
C
D
Ancestor C
E
F
What type of structure is shown?
Homologous
List the 5 things necessary for a species
to stay in genetic equilibrium?
1. A large breeding population
2. No Mutations
3. Random Mating
4. No Migration
5. No Natural Selection
What type of structure is shown?
Vestigial
Chance events that change the genetic
composition of a population is what?
Genetic Drift
Define:
Homologous Structures
Structures that look similar internally but
serve different functions
What kind of natural selection pressure is this
and how will the population change?
Bald Eagles on Mt Hood actually aren’t always
bald. Some have lots of hair and some have no
hair, and some are in-between. During mating
season, female eagles prefer the birds with
some hair- not too much and not bald.
Stabilizing- The population of birds will
change to show the intermediate hair type.
What type of natural selection pressure
is shown?
Disruptive Selection
What is the closest common ancestor of
Sharks and Lamprey?
A
B
C
D
Ancestor A
E
F
What are the three types of structures
that provide evidence for evolution?
1. Homologous Structures
2. Analogous Structures
3. Vestigial Structures
If the population was in genetic equilibrium,
will it continue to stay in equilibrium? Why or
Why not?
In part of the rainforest, there is a population of
2,500 monkeys. Due to deforestation and global
warming, the monkey population has declined to
150 individuals.
No- there is no longer a large breeding
population.
The dramatic loss of genetic variation
due to environmental effects of human
activities?
Bottleneck Effect
What type of natural selection pressure
is shown?
Directional Selection
Is this population in genetic equilibrium?
Why or Why not?
Two different types of rabbits live in Oregon,
ones with short ears and ones with long ears.
Hunters prize the long eared rabbits; so due to
predator pressures, the long eared rabbits
have began moving to the short eared rabbits
territory and breeding with them.
No- because the long eared rabbits are
migrating.
What is a derived characteristic shared
by gorillas and salamanders?
A
B
C
D
E
Jaws and Lungs
F
How long does it take for a population to
evolve?
Evolution happens over many
generations
What kind of natural selection pressure is
this and how will the population change?
A population of butterflies lives along a sandy
beach. Some of the butterflies have white
wings and some have brown wings. Over time,
the habitat changes to a forested area with
lots of trees.
Directional- Over time, the population will have
more and more brown wings.
The loss of genetic variation when a new
colony is formed by a small number of
individuals from a larger population
Founder Effect
What are the characteristic that gorillas
have that salamanders don’t?
A
B
C
D
E
F
Amniotic Membranes, Hair, No tail
What type of natural selection pressure
is shown?
Stabilizing Selection
How does the Founder Effect result in
genetic drift?
When a new colony is formed by a few
members of a population, there is a small
breeding population that reduces genetic
variation.

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