BIO 191 EXAM 1 NEWEST 2024-2025 ACTUAL EXAM COMPLETE 350 QUESTIONS AND CORRECT DETAILED
ANSWERS
Evolution - (answer) Defined by Darwin's phrase "descent with modification"
What did the study of fossils help with? - (answer) Lay the groundwork for Darwin's ideas
Where are fossils found? - (answer) Strata
Strata - (answer) Layers of sedimentary rock
Ancestral species - (answer) Found in lower layers of strata
Derived species - (answer) Found in upper layers of strata
Adaptation vs. Adaptations - (answer) adaptation: a process
adaptations: the traits
extinct species vs extant species - (answer) extinct: no longer exist
extant: currently in existence
artificial selection - (answer) humans modify other species by selecting and breeding individuals with
desired traits
If a species has a heritable trait that is advantageous, what would happen? - (answer) reproduction of
individuals with these traits accumulate over time, increasing frequency of individuals with these traits.
natural selection - (answer) individuals with certain heritable traits survive and reproduce at a higher
rate than other individuals
over time, natural selection: - (answer) increases the match between organisms and their environment
, BIO 191 EXAM 1 NEWEST 2024-2025 ACTUAL EXAM COMPLETE 350 QUESTIONS AND CORRECT DETAILED
ANSWERS
if an environment changes over time, what may result in natural selection? - (answer) adaptation to
the new conditions and may give rise to new species
does natural selection create new traits? - (answer) no, it selects for traits already present in a
population
what determines which traits will be selected for or selected against? - (answer) the local environment
what are the four types of data that document the pattern of evolution? - (answer) direct observations,
homology, the fossil record, biogeography
example of evidence for natural selection - (answer) drug-resistant bacterias
evolution is a process of - (answer) descent with modification
homology - (answer) similarity resulting from common ancestry
homologous structures - (answer) anatomical resemblances that represent variations on a structural
theme present in a common ancestor
vestigial structures - (answer) remnant of a structure that may have had an important function in a
species' ancestors, but has no clear function in the modern species.
convergent evolution - (answer) the evolution of similar, or analogous, features in distantly related
groups
When do analogous traits arise? - (answer) when groups independently adapt to similar environments
in similar ways
does convergent evolution provide information about ancestry? - (answer) no
ANSWERS
Evolution - (answer) Defined by Darwin's phrase "descent with modification"
What did the study of fossils help with? - (answer) Lay the groundwork for Darwin's ideas
Where are fossils found? - (answer) Strata
Strata - (answer) Layers of sedimentary rock
Ancestral species - (answer) Found in lower layers of strata
Derived species - (answer) Found in upper layers of strata
Adaptation vs. Adaptations - (answer) adaptation: a process
adaptations: the traits
extinct species vs extant species - (answer) extinct: no longer exist
extant: currently in existence
artificial selection - (answer) humans modify other species by selecting and breeding individuals with
desired traits
If a species has a heritable trait that is advantageous, what would happen? - (answer) reproduction of
individuals with these traits accumulate over time, increasing frequency of individuals with these traits.
natural selection - (answer) individuals with certain heritable traits survive and reproduce at a higher
rate than other individuals
over time, natural selection: - (answer) increases the match between organisms and their environment
, BIO 191 EXAM 1 NEWEST 2024-2025 ACTUAL EXAM COMPLETE 350 QUESTIONS AND CORRECT DETAILED
ANSWERS
if an environment changes over time, what may result in natural selection? - (answer) adaptation to
the new conditions and may give rise to new species
does natural selection create new traits? - (answer) no, it selects for traits already present in a
population
what determines which traits will be selected for or selected against? - (answer) the local environment
what are the four types of data that document the pattern of evolution? - (answer) direct observations,
homology, the fossil record, biogeography
example of evidence for natural selection - (answer) drug-resistant bacterias
evolution is a process of - (answer) descent with modification
homology - (answer) similarity resulting from common ancestry
homologous structures - (answer) anatomical resemblances that represent variations on a structural
theme present in a common ancestor
vestigial structures - (answer) remnant of a structure that may have had an important function in a
species' ancestors, but has no clear function in the modern species.
convergent evolution - (answer) the evolution of similar, or analogous, features in distantly related
groups
When do analogous traits arise? - (answer) when groups independently adapt to similar environments
in similar ways
does convergent evolution provide information about ancestry? - (answer) no
