Evolution
Warm up #1 Natural Selection
1. Which of the options below are adaptations that Darwin
noticed about turtles and finches on Galapagos Island?
a. Somewhat similar species with traits that suited their
particular environment.
b. Speciation
c. Variation in the length of tortoises’ necks.
d. Stabilizing selections
2. Darwin’s idea of natural selection includes:
a. Fossil record
b. natural selection and natural variation
c. use and disuse.
d. descent with modification
e. variations best suited to the environment
f. transmission of acquired characteristic
g. competition among the members of a population
h. observations of many species and their geographical
locations.
i. the greatest number of offspring
j. acts on phenotypes
k. acts on alleles
l. change over time
m. farmer breeds only his or her best livestock
Warm up #2 Evolution
1. Of which type of natural selection is each statement an
example of: Directional selections, stabilizing selections
or disruptive selections?
A) Individuals at only one end of a bell-shaped curve of
phenotype frequencies have high fitness, the result is?
B) When individuals with an average form of a trait have
the highest fitness the result is?
2. Theory of evolution includes:
a. The organisms that are the fittest are always the larges
and strongest
b. Acquired characteristics that are inherited are the cause
of evolution
c. More offspring are produced than can possible survive
d. Change over time
e. The ideas of Lamarck or Maltheus
3. A change in the sequence of DNA is called a
a. Single-gene trait,
b. mutation
4. Sharks, dolphins and penguins all have streamlined bodies
and appendages that enable them to move through water.
These similarities are the result of
a. Coevolution,
b. convergent evolution,
Warm up #3 Gene Traits and Isolation
1. Single gene traits
a. Widows peak in humans is an example
b. With a dominant and recessive pattern will result in one
phenotype
c. With a dominant and recessive pattern will result in two
phenotypes
2. Categorize each sentence into the 3 different isolations
Behavioral isolation, geographic isolation, temporal
isolation
A) The separation of populations by barriers such as rivers,
mountains or bodies of water is called…..
B) A factor that is necessary for the formation of a new
species
C) Some plants, whose flower opens at midday and other
plants whose flowers, open late in the day.
3. Genetic Drift
a) Allele frequency change because of mutations
b) Allele frequency change because of chance
c) Allele frequency change because of natural selection
d) Tends to occur in populations that are very large
e) Tends to occur in populations that are small
Warm up #4 Fossils
1. The fossil record
a) The number and location of bones in many fossil
vertebrates are similar to those in living vertebrates
based on the fact of common ancestors.
b) The number and location of bones in many fossil
vertebrates are similar to those in living vertebrates
based on the fact of the struggle for existence.
c) Was viewed by Darwin as evidence the earth was
thousands of years old.
d) Was viewed by Darwin as a record of evidence.
e) Is found in sedimentary rock
2. Index fossils
a) used to compare the relative ages of fossils
b) come from species that have existed for a long period
over a wide geographic range
c) come from species that have existed for a short period
over a small geographic range
3. Gene pool(s)
a) are the combined genetic information of all members
of a particular population
b) Contain 2 or more alleles for each gene
c) are the relative frequencies of the alleles that never
change.
4. Phenotypes
a) A single-gene trait that has two alleles and that shows a
simple dominant-recessive pattern will result in one
phenotype.
b) A single-gene trait that has two alleles and that shows a
simple dominant-recessive pattern will result in two
phenotypes.
c) the number of phenotypes produced for a given trait
depends upon the number of genes that control the trait.
d) the number of phenotypes produced for a given trait
depends upon the relative frequencies of the various
alleles.
e) The distribution of phenotypes for a typical polygenetic
trait can often be expressed as a bar graph.
f) The distribution of phenotypes for a typical polygenetic
trait can often be expressed as a bell shaped curve.
g) Two main sources of genetic variation are genotypes
and phenotypes
h) Two main sources of genetic variation are gene
shuffling and mutations.