Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce. This theory is known as

Remains of ancient organisms are called

If an organism has a vestigial structure, that structure likely once had a function in a(n)

the hind leg bones in a whale are examples of

What is the study of organisms at the early stages of development?

What is this an example of?

Structures in organisms that have the same function due to similar environmental pressures.

What is the movement of genes into and out of a gene pool called?

Two organisms that are closely related would have

According to the phylogenetic tree shown, of the following, who is the most closely related to turtles?

What made Darwin unique when comparing his observations to other scientists of his time when specifically defending his Theory of Evolution?

In regard to the definition of biological evolution: POPULATIONS change over time; INDIVIDUALS do not.

Which term refers to the process by which individuals that are better suited to the environment survive and reproduce therefore passing down their genes to their offspring?

a change in the genetic characteristics of a population of organisms over time

The type of selection that may eliminate intermediate/ “in between” phenotypes is

A physical or behavioral trait that helps an organism survive and reproduce in its environment is called a what?

What most likely caused the finches on the Galapagos Islands to have beaks that were different from the finches on the mainland?

When looking at two birds of the same species, you notice that one has darker feathers than the other one. You also notice that one has a beak that is just a little longer. These slight differences within members of the same species are called.....

_______________, or selective breeding, is one way that humans impact evolution. One example is how the Belgian Blue cow has been bred to have greater muscle mass.

Darwin's book was called On the Origin of

Genetic differences between organisms of the same species

What is the term for a feature that allows an organism to survive better in its environemtn?

Homologous structures have a similar function.

Homologous structures provide evidence that organisms share a common ancestor.

The wing of a bat and the front limb of a mammal have a similar number and arrangement of bones. What type of structure is this an example of?

A common example of ____ selection in animals is dog breeding. As with racehorses, particular traits are desirable in different breeds of dogs that compete in dog shows. The judges look at coat coloring and pattern

A shark fin and a dolphin flipper have different structures but similar functions. This is an example of what type of structure?

Which of the following is NOT evidence of evolution?

A single species of lizard evolved over time into two species, each on opposite sides of a canyon. This change was likely due to which of the following?

A single species of lizard evolved over time into two species, each on opposite sides of a canyon. This change was likely due to which of the following?

Which of the following describes members of the same species?

Structures that lose their function in the organism and become smaller.

___________________ removes individuals with average trait values, creating two populations with extreme traits.

___________________ will shift populations toward a beneficial but extreme trait value.

Which of the following determines whether or not a variation will become more common in a population?

As a biologist, you are studying a population of moles. In the course of your research, you identify a nearby population that occasionally comes into contact and interbreeds with your study population. What best describes the evolutionary process at work?

Someone steps on some bugs and randomly removes their alleles from the population. This is an example of

Calculate the frequency of the dominant allele in this population of beetles. Make sure to write your answer in percent form with the percent sign and no numbers after the decimal. (example: 24%)

Given the information in the table below, which species are most closely related?

Average beak sizes of the seed-eating medium ground finch on one of the Galapagos Islands are shown in the diagram below. During wet years, all types of seeds are abundant. The medium ground finch prefers to eat small seeds that are easy to crush. However, during droughts (dry years), when small seeds are not as abundant, they eat the larger seeds on the island. How might an extended period of drought influence the ground finch population?

The image above shows the changes in a moth population's coloring over time. Which type of natural selection has occurred and why?

Which of the graphs below best illustrates homeostasis?

Rock pocket mice species in New Mexico exist as mostly tan in color and easily blend in with the limestone rocks and sand that cover the landscape of this region. About a thousand years ago there was a volcanic eruption which created lava flows on the surface which cooled and turned into a darker black rock color. The rock pocket mice living on the black rocks needed an adaptation to survive against visual predators like hawks and owls. Over multiple generations the population living amongst the black lava flow were observed to change to a black-furred color. Which statement below explains how this might have occurred?

Geological evidence like fossils can be used as evidence for evolution. Which statements below correctly explain how? Choose all that apply.

In beetles, brown shell color (B) is dominant to Blue shell color (b). Brown beetles are well camouflaged so they are hard for predators to see. The chart below show the allele frequency of population of beetles.

Which choice correctly shows the most likely allele frequency after 20 generations?

A bird that can outcompete other birds for food and produces many eggs has a high___

Charles Darwin observed different species of finches on the Galapagos Island, Which TWO explanations below are correct? CHOOSE TWO ANSWERS.

What do scientists consider the MOST reliable evidence of evolution?