Variation & Selection
When an organism is able to acclimate itself to changes in its environment, it is ___________
Adapting
Darwin was a naturalist that studied the flora and fauna of the _______________ islands
Galapagos
When an organism's traits increase its chance of mating, reproducing, and passing on its genes, those traits are considered _______________ adaptations
Beneficial
Mutations are caused by a _____________ (random or non-random) insertion or deletion of a section of DNA
random
What is one primary piece of evidence scientists look at to compare ancient organisms to modern ones?
Fossils
Something that allows an organism to adjust to changes in its environment
Adaptation
Wallace was a naturalist that studied the distribution of animals in ______________
Southeast Asia
In the peacock example, males that had showy feathers were able to more successfully reproduce and produce offspring also with _________ feathers
showy
Organisms that evolve primarily through mutations (like bacteria) are able to reproduce over a very ___________ timespan
short
By studying the _____________ of related organisms, we can trace shared body shape and structure throughout evolutionary time
morphology
Adaptations arise from natural _____________s in a population
Variations
Darwin was able to get a spot aboard the research vessel because _____________
He was of noble birth (wealthy and high social status)
Sexual selection happens over a __________ period of time
long
False
One organism that we can watch evolve over a very short period of time is.....
Bacteria
The ability of an organism to survive and reproduce in its given environment
Fitness
Darwin and Wallace made ____________ (different or the same) discoveries about evolution
The same
Sexual selection is a _________ (random or not random) process?
Not random
When mutations occur, that new trait can give an organism a ________________ in its environment
biological advantage
We can look at the _________ of different related organisms to see how they develop in exactly the same way prior to birth
embryos
If an organism's adaptations allow it to survive AND reproduce, it is considered to have high ___________
Fitness
Darwin's "Theory" of Evolution is still considered a theory because...
It can only be studied on Earth, it is not universal (yet)
During sexual selection, individuals with more beneficial traits are more likely to reproduce, due to ____________ between genetic males.
Competition
Mutations can be _______________ (passed on to offspring), but are not always
heritable
If a certain trait is selected upon generation after generation, then we (should or shouldn't) expect to see that trait in both an alive organism and its fossil ancestors
should