stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Evolution and Natural Selection Flashcards | StudBud
Explore
/
Evolution and Natural Selection
Evolution and Natural Selection
23 terms
·
StudBud Administration
·
353 plays
Test your knowledge of Evolution and prepare for our upcoming TEST!
Flashcards
23 cards
F
Practice quiz
P
Host live
L
Questions
23
Answers
1
The 4 types of natural selection are:
sexual, asexual, directional, disruptive
sexual, directional, stabilizing, extreme
sexual, asexual, stabilizing, disruptive
sexual, directional, stabilizing, disruptive
2
Sympatric and Allopatric Speciation result in new species that are reeproductively isolated
True
False
3
Adaptive radiation: When a single species evolves into more species that now fill different ecological niches.
True
False
4
Allopatric Speciation is the evolution of populations into separate species, but within the same geographic area
False
True
5
Which type of natural selection is this?
Directional Selection
Sexual selection
Disruptive Selection
Stabilizing Selection
6
Which is true about the bottleneck effect?
Creates an increase in genetic diversity
Dramatic, often permanent reduction in population size
Creates a decrease in genetic diversity
Due to an increase in population size
7
Male sperm are released into the water, but are unable to recognize and fertilize an egg of a different species
gametic isolation
hybrid infertility
zygotic mortality
hybrid inviability
8
Which is false about genetic drift.
Changes in allele frequencies are more pronounced in large populations
Changes in allele frequencies are more pronounced in small populations
Random shifting of the genetic makeup in the next generation
Type of evolutionary change without natural selection
9
Example of Natural Selection:
Slower cheetah being hunted and eaten
Drug resistant bacteria surviving and the non-resistant type dying off
Lions and tigers mating and producing offspring
Drug resistant bacteria surviving and reproducing
10
The founder effect occurs when:
Allele frequencies remain constant
A population is reduced by starvation and disease
None of the above
A small number of individuals establish a new population
11
In small populations, genetic drift can increase genetic diversity
True
False
12
Theory of Gradualism - accumulation of many small and ongoing changes and processes
True
False
13
A prezygotic mechanism is a reproductive isolating mechanism that prevents a fertilized egg from maturing
True
False
14
Theory of Uniformitarianism states that geological change is fast
True
False
15
Which is false about the fossil record?
Recent fossil deposits are more complex
Few known fossils / fossils of current species
Have been found high up in mountain ranges
Older fossil deposits are more complex
16
Several very similar species of mosquito occupy different habitats within a region
behavioral isolation
temporal isolation
geographical isolation
ecological isolation
17
Which is false about the Theory of Punctuated Equilibirum
Leaves behind many transitional fossils
Evolutionary changes are first caused by a rapid spurt of change
After the initial burst of evolution, additional changes are very slow
Species exposed to new or rapidly changing environment
18
Analagous Features have:
similar structure and origin, but different function
similar function but different origin and structure
similar function and same origin and structure
similar structure and origin, and same function
19
Convergent Evolution - evolution of different traits in distinctly related species
True
False
20
What is happening in this graph?
The average size of bird beaks is now smaller
Phenotype at one extreme is favoured by the environment
Phenotype at both extremes are favoured by the environment
Average phenotype is favoured by the environment
21
In Disruptive selection, birds with longer/shorter beaks will be more sucessful than the average medium-sized beaks
False
True
22
Which is true about harmful mutations
Do not accumulate over time
Are favoured by the environment
Increase the organisms reproductive success
Accumulate over time
23
When different species evolve from one common ancestor but are now very different
Adaptive Radiation
Divergent Evolution
Coevolution
Convergent Evolution
