Biology 196: Evolution Evidence (PWPT 3)

True or False: Inherited characteristics of organisms decrease their survival and reproduction in specific environments

FALSE?! Inherited characteristics ENHANCE their survival and reproduction in specific environments

True or False: Natural selection can only increase or decrease heritable traits that are variable in a population

True

Fill in the blank: If the ___ changes, ___ ____ may drive adaptions to new conditions, giving rise to a new ____.

If the ENVIRONMENT changes, NATURAL SELECTION may drive adaptions to new conditions, giving rise to a new SPECIES.

How are all organisms related?

They are all related through descent form a common ancestor in the distant past

What does descent with modification cause?

Similarities (unity) and differences (diversity) among earth’s species

What are the four types of evidence of evolution?

1. Direct observations of evolutionary change by Natural Selection (observed natural changes)

2. Homology

3. Fossil Record

4. Biogeography

Heritable

transmissible parent-offspring

Antibiotic resistant pathogens are an example of what?

example of how NS dramatically affects humans

Fill in the Blank: Natural selection acts on ____, but evolution only affects ___.

Natural selection acts on INDIVIDUALS, but evolution only affects POPULATIONS.

When does evolution by natural selection occur rapidly?

When generation times are shorter