BIOL 1334 Exam 1 Questions | 2026/2027 | Answers Correct
| With Complete Solutions
- 3.5 Billion years ago Correct Answers According to scientific
evidence, life on earth first originated approximately...
- Adaptation Correct Answers This term describes a phenotypic
feature that has been shaped by many generation of natural
selection, so that every typical member of the species is born
with it.
- Clade Correct Answers A family group including all
descendants of a common ancestor (a branch of the tree of life)
is called a(n)...
- Convergence Correct Answers When two species share
similar phenotypes because they are shaped by similar pressures
in their environments (not because they have a common ancestor
with those features).
- Convergence Correct Answers Which of the following
answer choices does not qualify as a mechanism for
microevolution?
- Heterotrophic Correct Answers The first life forms on earth
were almost certainly...
- Populations
- Over the course of generations Correct Answers Evolution
happens to..
, - Reproductive success Correct Answers Which term best
describes the fitness of an individual organism, relative to that of
its competitors?
Artificial selection Correct Answers Dogs have been shaped by
careful breeding, for characteristics that are useful to humans
(herding, hunting, guarding, companionship, etc.).
Evolution Correct Answers Any change in the heritable traits
in a population across generations.
False Correct Answers Genetic drift is generally associated
with an increase in genetic variation within a population.
False Correct Answers The founder effect and the bottleneck
effect are both forms of adaptive evolution.
Gene flow Correct Answers Two populations of guppies live in
ponds that are not very far apart. Occasionally, flooding allows
the fish from one of these ponds to mate with fish from the other
populations.
Genetic drift Correct Answers Historical accidents can cause
evolution. Examples of this phenomenon include the founder
effect and the bottleneck effect.
Natural selection Correct Answers On a lava rock habitat, dark
pocket mice are more likely to pass on their genes than sandy
colored pocket mice. This leads to a greater proportion of dark
colored mice in the population with each successive generation.
| With Complete Solutions
- 3.5 Billion years ago Correct Answers According to scientific
evidence, life on earth first originated approximately...
- Adaptation Correct Answers This term describes a phenotypic
feature that has been shaped by many generation of natural
selection, so that every typical member of the species is born
with it.
- Clade Correct Answers A family group including all
descendants of a common ancestor (a branch of the tree of life)
is called a(n)...
- Convergence Correct Answers When two species share
similar phenotypes because they are shaped by similar pressures
in their environments (not because they have a common ancestor
with those features).
- Convergence Correct Answers Which of the following
answer choices does not qualify as a mechanism for
microevolution?
- Heterotrophic Correct Answers The first life forms on earth
were almost certainly...
- Populations
- Over the course of generations Correct Answers Evolution
happens to..
, - Reproductive success Correct Answers Which term best
describes the fitness of an individual organism, relative to that of
its competitors?
Artificial selection Correct Answers Dogs have been shaped by
careful breeding, for characteristics that are useful to humans
(herding, hunting, guarding, companionship, etc.).
Evolution Correct Answers Any change in the heritable traits
in a population across generations.
False Correct Answers Genetic drift is generally associated
with an increase in genetic variation within a population.
False Correct Answers The founder effect and the bottleneck
effect are both forms of adaptive evolution.
Gene flow Correct Answers Two populations of guppies live in
ponds that are not very far apart. Occasionally, flooding allows
the fish from one of these ponds to mate with fish from the other
populations.
Genetic drift Correct Answers Historical accidents can cause
evolution. Examples of this phenomenon include the founder
effect and the bottleneck effect.
Natural selection Correct Answers On a lava rock habitat, dark
pocket mice are more likely to pass on their genes than sandy
colored pocket mice. This leads to a greater proportion of dark
colored mice in the population with each successive generation.
