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HonBio_Evolution_Review Flashcards | StudBud
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HonBio_Evolution_Review
HonBio_Evolution_Review
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Answers
1
Individuals in a population are constantly reproducing.
False
True
2
In a population of 100 squirrels, 25 show the recessive trait of skinny tail. What are the allele frequencies?
p = 0.2, q = 0.8
p = 0.25, q = 0.75
p = 0.75, q = 0.25
p = 0.5, q = 0.5
3
intrasexual selection
selection between the same gender
opposite of intersexual selection
genetic drift
males fight for female attention causing females to decide
4
What is the correct order of the name of the natural selection graphs.
Directional, Disruptive, Stabilizing
Stabilizing, Directional, Disruptive
Disruptive, Directional, Stabilizing
Directional, Stabilizing, Disruptive
5
The goal of every organism is to...
reproduce
be the best there ever was
survive
help others survive
6
What is the best adaptation to living in the jungle?
Green color to blend in with leaves
Loud vocalization
Sharp claws
Flippers
7
Fitness is a result of
adaptations
homologies
common descent
variation
8
In a population of 500 individuals, 149 show the recessive trait. Which HW variable represents this?
q
p2
q2
2pq
9
genetic drift
The exchange of genes with another population.
The collection of fossils recorded in rock layers over time.
A change in a gene pool due to chance.
Preserved remains or markings left by organisms that lived in the past.
10
What did Darwin study on the HMS Beagle?
whales
people
plants and animals
shrimp
11
Survival of the fittest is the theory that
animals that are most fit survive and pass on their genes
organisms change and pass these changes to their kids
organisms adapt to their environments during their life
organisms that go to the gym are the fittest
12
Mutation and sexual reproduction lead to what?
An immediate evolutionary change
Clones
New traits
More competition
13
Calculate allele frequencies: 42 homozygous dominant, 70 heterozygous , and 60 recessive.
Not enough information
A = 0.50, a = 0.50
A = 0.45, a = 0.55
A = 0.55, a = 0.45
14
Gene flow is
The exchange of genes with another population.
The collection of fossils recorded in rock layers over time.
A change in a gene pool due to chance.
Preserved remains or markings left by organisms that lived in the past.
15
Evolution is the process of
change in species over long periods of time
development of once-celled organisms from mammals
changing energy flow in food webs
embryonic development of modern humans
16
If a population is in Hardy - Weinberg equilibrium, which of the following conditions must be true
There cannot be any traits that provide an adaptative advantage.
The population must be very small
The population needs to be growing through immigration and emmigration
Sexual selection allows females to pick the healthiest male.
17
Intersexual Selection is...
A non-romantic type of relationship
Mates choose a partner based on characteristics of the other gender
Physical attractiveness is prioritised
Acess to partners is a competitive process
18
Only some living things share a common ancestor.
False
True
19
Disruptive selection...
Is something....~
Is the most common mechanism of action for natural selection
Favours the extreme traits in a population
Favour those individual who have extreme variations
20
which would be an example of gene flow?
a population of koalas with little genetic variation
a bee carrying pollen from one flower population to another
tree frogs being eaten by snakes and birds.
a wombat passing its genes to its offspring
21
This is evidence for evolution shows...
comparative biochemistry
adaptive radiation
homologous structures
comparative DNA
22
Which of these are evidence for evolution?
Fossils
Intelligence
acquired characteristics
Color
23
The two types of genetic drift are...
Non-random mating and gene flow
The bottleneck effect & the founder effect
Natural selection and the founder effect
The bottleneck effect and mutations
24
The organisms that are best adapted for their environment survive and reproduce. This is called
Natural Selection
Reproductive fitness
Selective Breeding
Genetic Variation
25
In natural selection, what provides the selective pressure?
Environment
Humans
Darwin
None
26
Types of Natural Selection
Directional selection - variation favoring one extreme
Stabilizing selection - favoring the middle
Disruptive selection - favoring both extremes
Hardy Weinberg Equilibrium - no selection occcuring
27
Based on this chart, which animals are closest relatives of Humans?
Gorilla
Horse
Zebra
Chimpanzee
28
Genetic Drift is most likely to occur in
populations that migrate
large populations
small populations
populations that have a low frequency of mutation
29
Allele frequencies are used to calculate what?
genetic adaptations
sexual reproduction
evolution standards
genetic variation
30
Who proposed the Theory of Evolution?
Robert Hooke
James Watson
Robert Wallace
Charles Darwin
31
What do we call similar bone structures that indicate a link to a common ancestor?
Homologous Structures
Vestigial Structures
32
If a population has an dominant allele frequency of 0.2, which HW variable represents this?
p2
q
q2
p
33
More offspring in a population than there are resources will lead to what?
Competition
Food shortage
Less Space
All of the above
34
This is an example of....
Fitness
Artificial Selection
Selective Breeding
Natural Selection
35
What is fitness?
How well an organism is suited to swim.
How well an organism is suited to reproduce and survive.
How well an organism is suited to fly.
How well an organism is suited to run.
36
A characteristic that helps an organism survive and reproduce in its environment is called...
Fitness
Adaptation
Homologous Structure
Variation
37
Why did birds on the Galapagos Islands have different beaks than birds on the mainland?
Had different food to eat
Had different predators
They had difference ancestors
They thought it looked prettier
38
What is Natural Selection?
Naturally picking a favorite
When animals all look alike
When your a small animal
Traits that increase the chance of surviving and reproducing
39
In this picture, the older fossils are found...
in the fourth layer
in the top layer
in the second layer
in the third layer
40
What are the types of Natural Selection
Directional selection and Sexual Selection
Stabilizing, Diversifying, Directional, Sexual selection
There are no types of natural selection
Stabilizing selection and diversifying selection
41
What species of animal did Darwin study?
Turtles
Finches
Eagles
Giraffes
42
What is artificial selection?
traits are more or less commonbased on reproductive success
The second componenet of artificial intelligence
humans breed plants or animals with certain desirable traits
the change of frequency within a population's alleles
43
Intersexual selection
traits that evolve to attract members of the opposite sex
traits that evolves to enable individuals to compete for mating opportunite
attributes/ behaviours that increase reproductive success are passed on
genes that promote survival and reproduction are passed on
44
These embryos are evidence for evolution because...
They show common development
show biochemical evidence
adaptive radiation
show fetuses are identical
45
Left over body parts that have no use are called....
Homologous structures
Analogous structures
Variations
Vestigial Structures
