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BIO-152 Exam 1 VCU Questions And
Answers 100% Pass
What has an impact on the rate at which mutations occur? - ANS The number of times DNA
is replicated, frequency of cell division, size of genome
A ___________ mutation originates during meiosis, while a _______ mutation originates during
mitosis - ANS germ-line, somatic
_________ evolution occurs when _______ related species become different over time and
__________ evolution occurs when _________ related species become more similar over time -
ANS divergent, closely, convergent, distantly
What contributes to the theory of evolution? - ANS Anatomical structures that appear to be
modified version from a common ancestor, patterns in fossil record, biogeographic patterns in
dist. of a species
What must be true in order for individuals best suited for growth and reproduction to
contribute disproportionately to the next generation? - ANS favorable traits that can be
inherited, and genetic variation within populations
An _________ mutation occurs when part of a chromosome breaks and is reinserted backwards
- ANS inversion
, ©EVERLY 2025 ALL RIGHTS RESERVED
_______ _________ uses random genetic changes, it cannot anticipate future needs -
ANS Natural Selection
Evolutionary changes = - ANS Increased ability of a species to survive and reproduce in a
specific environment
_________ are the ultimate source of genetic variation - ANS mutations
Shared fundamental features at the level of molecular function and cell organization indicate
that - ANS organisms came from a common ancestor
These are examples of:
wing of a bird and bat wing
octupus eye and human eye - ANS analogous structures
__________ _________ means organisms are unrelated, but have similar adaptations -
ANS convergent evolution
What would happen if a frameshift mutation causes a stop codon to be inserted into a DNA
sequence? - ANS the resulting protein may be too short and non-functional
Whether or not a trait is favorable depends on - ANS the environmental conditions at the
time and thus the same traits are not always selected
A frameshift mutation can result from? - ANS a single base deletion, or a single base deletion
(must mess up pairs of three)
BIO-152 Exam 1 VCU Questions And
Answers 100% Pass
What has an impact on the rate at which mutations occur? - ANS The number of times DNA
is replicated, frequency of cell division, size of genome
A ___________ mutation originates during meiosis, while a _______ mutation originates during
mitosis - ANS germ-line, somatic
_________ evolution occurs when _______ related species become different over time and
__________ evolution occurs when _________ related species become more similar over time -
ANS divergent, closely, convergent, distantly
What contributes to the theory of evolution? - ANS Anatomical structures that appear to be
modified version from a common ancestor, patterns in fossil record, biogeographic patterns in
dist. of a species
What must be true in order for individuals best suited for growth and reproduction to
contribute disproportionately to the next generation? - ANS favorable traits that can be
inherited, and genetic variation within populations
An _________ mutation occurs when part of a chromosome breaks and is reinserted backwards
- ANS inversion
, ©EVERLY 2025 ALL RIGHTS RESERVED
_______ _________ uses random genetic changes, it cannot anticipate future needs -
ANS Natural Selection
Evolutionary changes = - ANS Increased ability of a species to survive and reproduce in a
specific environment
_________ are the ultimate source of genetic variation - ANS mutations
Shared fundamental features at the level of molecular function and cell organization indicate
that - ANS organisms came from a common ancestor
These are examples of:
wing of a bird and bat wing
octupus eye and human eye - ANS analogous structures
__________ _________ means organisms are unrelated, but have similar adaptations -
ANS convergent evolution
What would happen if a frameshift mutation causes a stop codon to be inserted into a DNA
sequence? - ANS the resulting protein may be too short and non-functional
Whether or not a trait is favorable depends on - ANS the environmental conditions at the
time and thus the same traits are not always selected
A frameshift mutation can result from? - ANS a single base deletion, or a single base deletion
(must mess up pairs of three)
