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Natural Selection & Genetic Drift Flashcards | StudBud
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Natural Selection & Genetic Drift
Natural Selection & Genetic Drift
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1
Birds can't lay too many eggs or too few eggs. Most start to lay an average amount of eggs.
This is an example of Diversifying Selection
This is an example of Stabilizing Selection
This is an example of Directional Selection
2
Whodeveloped and named 5 conditions needed to maintaingenetic equilibrium?
Rosalind Franklin
Darwin
Watson and Crick
Hardey and Weinberg
3
Whatis a change to the genetic code (DNA) called
The vital force
A mutation
There is no word used to describe thisoccurrence
This never happens, DNA is always replicatedcorrectly
4
The Founder's Effect is
all of the above
a type of natural selection
a type of artificial selection
a type of genetic drift
5
The change in aspecies that allows it to better survive in its environment is known as an
Assimilation
Accomondation
Avocado
Adaptation
6
What can cause a change in allele frequency in apopulation?
neither
NaturalSelection in a changing environment
both Natural Selection and Genetic Drift
GeneticDrift due to a small population size
7
This graph shows which pattern of Natural Selection?
Directional Selection
Diversifying Selection
Stabilizing Selection
8
The Bottleneck Effect is
a type of genetic drift
a type of artificial selection
a type of natural selection
all of the above
9
Which pattern of Natural Selection can not usually lead to speciation?
Stabilizing Selection
Diversifying Selection
Directional Selection
10
A bird is overhunted for its beautiful feathers. The population is drastically decreased
This is an example of the founder's effect (genetic drift)
this is not genetic drift
This is an example of the bottleneck effect (genetic drift)
11
The finches thatDarwin studied had some similarities. According to Darwin, the finches probably
shared a common ancestor
all ate the same diet
did not ever have a common ancestor
12
Natural Selection relies on
Existing genetic variations that help an organism survive
Organisms editing their own genes
pollution
anything but mutations. Mutations are always bad.
13
What
can
a change to the genetic code (DNA) cause?
Harm to the organism
A new allele
All of the above
A new variation
14
An ancient species of finch flew to the Galapagos and founded a new population there
This is an example of the bottleneck effect (genetic drift)
This is an example of the founder's effect (genetic drift)
this is not genetic drift
15
This graph shows what pattern of Natural Selection?
Diversifying
Stabilizing
Directional
16
What was Darwin's job on the HMS Beagle?
Naturalist
Captain
Artist
Cook
17
In winter, white ones blend in. In the summer black ones hide in the shade. Gray ones are eaten
This is an example of Diversifying Selection
This is an example of Stabilizing Selection
This is an example of Directional Selection
18
This graph shows which pattern of Natural Selection?
Directional Selection
Diversifying Selection
Stabilizing Selection
19
Many predators eat frog eggs. Frogs have not gone extinct, even though lots of eggs get eaten
because frogs overproduce offspring
They try to make eggs that are invisible
Frogs learn how to eat their predators instead
Frogs steal genes from tigers to increase aggression
20
The industrial revolution has darkened the trees in Europe. Birds eat moths they can see!
Genetic drift will occur, because this is random change
The light moths will continue to increase in number
Camouflaged dark moths will increase in number (camouflage)
Peppered Moth Allele Frequencies will not change
21
What is "The Change in Allele Frequency over time"?
variation
this does not occur
alleliance
evolution
22
What is a gene pool?
a real pool filled with genes up for grabs
all of the genes in an organisms nucleus
a conceptual tool to describe the genes within a population
23
Over time, extremely long tortoise necks are selected for within this tortoises' population.
This is an example of Directional Selection
This is an example of Diversifying Selection
This is an example of Stabilizing Selection
24
Darwin's most fameous research was conducted on
The Florida Keys
The Carribean Islands
The Galapagos Islands
The Manhattan Islands
25
What
can
a change to the genetic code (DNA) cause?
All of the above
A new variation
Harm to the organism
A new allele
26
Organisms well suitedto their environment
are always bigger
are more likely to pass on their genes
are always stronger
are always faster
27
What is the Hardy-Weinberg equilibrium equation?
2p+pq+2q=1
pq2+p+q=1
p+pq+q=1
p2+2pq+q2=1
28
What is the correct way to describe the theory of Evolution?
a. The Theory of Evolution by Natural Selection
a. The Theory of Evolution by Acquired Traits
a. The Theory of Evolution by Variation
a. The Theory of Evolution by SpontaneousGeneration
29
What is "allele frequency"?
the amount of certain variations within apopulation
the amount of certain traits within a family
the frequency of a lel
the frequency of reproduction within a genome
30
The process often referred to as "Survival of the Fittest" is called
Theory of Endosymbiosis
Natural Selection
Artificial Selection
Variation
31
Finches Darwin saw on theIslands above had beaks best adapted to their
climate temperature
feathers
diet
feet
32
What is a variation?
A bad trait for an organism to have
A trait that will always help a species be more“fit”
One of the varieties of a gene within apopulations gene pool
An adaptation
