The process by which species cease to exist is
What is extinction?
Yellow beetle and green beetles live in the rainforest canopy. You would expect:
What is the green population will increase and the yellow will decrease?
What is the vocabulary for "survival of the fittest"?
What is Natural Selection?
What are homologous structures?
What are bones in different organisms that are similar in shape and structure but server a different purpose.
This indicates a common ancestor
In an arctic environment, which would survive longer: red foxes or white foxes?
White foxes
The process by which new species originate and can no longer interbreed with others in the group is
What is speciation?
What is most likely to happen to moth populations in the picture shown?
Dark moths--hunted easily, dark moths--population decreases.
Does natural selection typically take a long time or a short time?
What is a Loooooooooooooooooooooooooooooooooooooong time?
Farmers and horticulturalists bred broccoli, cauliflower, kale, and cabbage from the wild mustard plant through
What is artificial selection?
A group of fish have been observed to show changes in mouth structure over many generations. What is this change a result of?
Fish adapting to the food source for survival.
What is a change in a gene that results in a new trait?
What is a mutation?
Evidence of the changes in a species' physical characteristics over long geological periods can best be shown through a study of..
What is the fossil record
What is artificial selection?
The process by which humans use animal breeding and plant breeding to selectively develop particular phenotypic traits.
A farmer wants to breed an animal that is strong and whose offspring can also reproduce. Should he breed a horse with a donkey? Why or why not?
No, because the horse and donkey are different species, and the offspring would be a hybrid (infertile).
Limiting reproduction because of geographical differences
What is geographic isolation?
A TRAIT that helps an organism to survive and reproduce in its environment
What is Adaptation?
What would happen if the environment changes drastically and no organisms have fitting adaptations?
What is a species could go extinct?
After traveling to the Galapagos Islands, Darwin noticed a lot of variation among beak sizes in Finches. This variation was a result of:
Developing different adaptations in order to survive on particular islands, specific to foods they eat.
Can an organism "CHOOSE" to evolve and change?
No, organisms CANNOT CHOOSE to change their genes or traits!
The type of reproductive barrier in which the offspring of a horse and a donkey is unable to reproduce is called.
What is hybrid infertility?
In the context of natural selection, what is fitness?
What is the ability to reproduce
What is a change or difference in offspring called?
What is a variation?
What is stasis?
What is a period or state of inactivity or equilibrium
What are structures that remain in modern organisms from ancient relatives that no longer serve a purpose. Ex: Appendix and wisdom teeth
Vestigial Structures
Ancestors of the Galápagos finches who had large strong beaks were most likely adapted to eating?
What are seeds or hard shelled foods.