Topic 4: Traits & Mutations
Hair color is an example of a mutation with __________ effects on the organism.
neutral
What is the process by which individuals that are better adapted to the environment are more likely to survive and reproduce than other members of the same species.
natural selection
The longest units of time in the geological time scale are called _______.
eras
Weather refers to short-term whereas climate is long-term
A(n) __________ is any difference between individuals of the same species.
variation
True or false: Darwin proposed that because of natural selection, helpful variations may accumulate in a population while unfavorable ones may disappear.
TRUE
The _________ period is also known as the "Age of Humans"
Quaternary
Name the three major climate zones.
Tropic, Temperate, Polar
Genetic mutations can be a result of base pairs being added, ____________ or ___________.
deleted; substituted
A(n) __________ is an inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment.
Adaptation
The Mesozoic era was split into three periods: Triassic, Jurassic and __________.
Cretaceous
What is one natural impact of rising global temperatures?
Possible Answers:
- Rising sea levels
-polar regions under threat
-extreme weather changes
A mutation is any change in the _______ of a gene or chromosome.
DNA
Who first suggested that evolution take place by small, gradual steps?
Jean-Baptiste Lamarck
In which period did the Great Dying occur?
Permian period
Which greenhouse gas is most abundant in Earth's atmosphere?
Carbon Dioxide
What are two ways in which mutations can be acquired?
1. Inherited from a parent
2. Acquired during the organism's lifetime
Who developed the first scientific system for classifying and naming living things?
Carolus Linnaeus
A time in which an abundance of new life forms appeared within a relatively short period of time.
How do volcanic eruptions affect the climate?
Volcanic eruptions have caused short-term cooling from temporarily blocking solar energy. It is predicted they could eventually cause long-term warming.