Study of past and present geographical distribution of species around the world showing common ancestry.

Similarities in structures like bones among species that exist because of descent from a common ancestor.

Similarities in DNA, RNA, or proteins between organisms that result from common ancestry.

Similarities in the ways that organisms grow from embryos to adults that exist because the organisms share a common ancestor

___________evolve not individual organisms.

Describes structures that no longer have a clear purpose or structures that over evolutionary time, changed in function.

Similar structures inherited from a common ancestor are called ...

Scientists excavated a skull fossil that provides evidence of newly discovered species of big cat. Based on the evidence, scientist hypothesize that big cats branched off from smaller wild cats about 6 million years ago.

Which of these resources did the scientists most likely rely on to form their hypothesis?

These provide evidence of common ancestry because

This image provides clues to the evolution of present-day organisms by showing that

The similarity in the bones of organisms that share a common ancestor are called...

The bones of Whales and manatees have underdeveloped hind limbs necessary for their terrestrial ancestors, instead of evolving legs they evolved flukes to propel them through the water. What can be concluded from this evidence?

A population of lizards lived in an environment that was green with tons of plants . The plants began to be removed and replaced with dark brown sand and brown rocks when a children's playground was built there. Which of the following genetic variations in the lizard population would most likely improve the species survival over time?

Organisms that are best adapted to their surroundings are most likely to produce the largest numbers of offspring

The white mice in location A survive to reproduce (have higher fitness) than the brown mice in location A because...

A heritable trait that allows an organism to survive in its environment better and reproduce.

A storm blows mainland flies to an island, after a long time apart, another storm reintroduces the island flies to the mainland, the island and mainland flies aren’t interested in mating with each other because they have developed different behaviors. A few island flies mate with mainland flies, but their eggs don’t produce offspring because they have many genetic differences between the two populations. What does this describe?

Which is most likely to happen to the beetle population due to predation?

Some male beetles move to a new population of beetles nearby, they breed and have offspring. What do you predict happened to the variation of the beetle population?

The lizard will select the color of beetle that is less suited to its environment (less fit). Because of this

If gene versions are carried to a population where those gene versions previously did not exist, it can increase genetic variation. This is called

In a small population, temporary drought, kills the three brown frogs in the population. The brown frogs do not survive to pass on their traits to the next generation. As a result, the brown allele for skin color is completely lost from the population. This results in

The change in the gene frequencies in a population over several generations and relies on the process of natural selection.