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Evolution
Test Description: HSCA 6
Instructions: Answer all questions to get your test result.
1) What are homologous chromosomes?
A
2 chromosomes, 1 original and 1 replicated
B
2 chromosomes, 1 for somatic cells and 1 for gametes
C
2 chromatids, 1 from mom and 1 from dad
D
2 chromosomes, 1 from mom and 1 from dad
2) What is an allele?
A
The phenotype of the offspring.
B
Variations of a particular gene.
C
Homologous chromosomes
D
Activated genes.
3) All living creatures on earth share a common
A
ancestor.
B
habitat.
C
descendant.
D
mating practice.
4) All of the following are mechanisms for evolution except:
A
mutation
B
excellence
C
genetic variation
D
natural selection
5) Which of the following is NOT correct concerning natural selection?
A
It can happen due to predation on a population.
B
It occurs when individuals in a population express genetic variation that leads to their having more offspring.
C
It results in an advantageous trait being more common in a population.
D
Its purpose is to make perfect organisms.
6) A population of trees is suddenly dying due to global warming. Which of the following is most likely to happen?
A
Individual trees will quickly mutate so they adapt to the hot climate.
B
Individual trees will change their method of reproduction.
C
Many trees will die and the population could go extinct unless some trees are growing in a cooler environment.
D
The trees will produce offspring better suited for hot environments allowing the species to survive.
7) Which of the following is NOT evidence for evolution?
A
Personality tests
B
Embryonic development
C
DNA testing
D
Fossils
8) This basic mechanism for evolution is caused by random changes in the allele frequency of a population.
A
Natural selection
B
Gene flow
C
Mutation
D
Genetic drift
9) The combined genetic information of all the members of a particular population forms a _
A
gene pool
B
niche
C
genotype
D
phenotype
10) What is fitness?
A
Being successful in passing on genes to the next generation.
B
Being the strongest animal in a population
C
Being the most attractive animal in a population
D
Being the smartest animal in a population
11) A mutation in which type of cell would have the greatest ability to affect the evolution of a population?
A
Gamete
B
Nerve cell
C
Somatic cell
D
Neuron
12) The type of selection in which organisms of average size have greater fitness than very large or very small organisms is called
A
natural selection.
B
disruptive selection
C
artificial selection.
D
stabilizing selection
13) How is sexual reproduction a source of genetic variation?
A
The offspring have more mutations than the parents.
B
It leads to mutations that are inherently beneficial.
C
The crossing over that occurs during meiosis increases genetic variation.
D
The offspring have more intelligence than the parents.
14) Leg bones in whales, appendices in humans, eyes in the blind mole rat, and wings on an ostrich are all examples of
A
analogous structures
B
homologous structures
C
natural selection
D
vestigial structures
15) When the fossil record shows rapid geologic change interrupting a period of equilibrium this is known as
A
stasis
B
selective mutations
C
punctuated equilibrium
D
gene flow
16) Which of the following is subject to evolution?
A
The genome of an individual
B
Individuals within a population
C
A population
D
Cells within an individual
17) All of the following can disturb genetic equilibrium except
A
sexual selection
B
natural selection
C
mutations
D
large population size
18) When the allele frequency of a population is constant, the population is not
A
evolving
B
static
C
small
D
in equilibrium
19) This is the movement of genetic information into or out of a population
A
genetic drift
B
natural selection
C
sexual selection
D
gene flow
20) Which of the following is NOT correct regarding the Hardy-Weinberg principle?
A
The principle applies to individuals not populations.
B
The principle states allele frequencies should remain constant unless factors cause them to change.
C
The principle applies to populations not individuals.
D
The principle can be used to predict the frequency of alleles.
*select an answer for all questions
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