What is an adaption?

If a mutation introduces a new fur color in a bear population, which factor might determine whether the frequency of the new allele will increase?

Traces of dead organisms such as the shells, animal skeletons, and other signs of past life are all-

periods of slow change interrupted by periods of rapid change with few, if any transitional fossils, best describes the theory of-

Embryos of several types of animals look very similar and develop in almost the same manner, especially in the early stages. What do these physical similarities indicate?

What happens to the individuals that are best suited for their environment?

Match the example with the correct mechanism of evolution: A strong storm blows a group of birds to a new island where they interbreed with the local bird population, introducing new alleles to the gene pool.

Structures that perform a similar function (but do not show common ancestry) are called _____ structures.

The structures in the image below provide evidence that the organisms in the image share a -

Individuals that can breed and produce fertile offspring are considered to be the same?

Which mechanism of evolution is the following example: Female frogs prefer mating with males that produce lower-pitched croaks, leading to a skewed gene distribution in the population.

Because of natural selection, favorable alleles will _________ in a population.

The following is an example of: In a grassland with frequent fires, plants with thicker bark survive and reproduce more successfully than those with thin bark.

The following is an example of: In a forest, a lightning strike kills most of a squirrel population, leaving only a few individuals whose traits become more common in the population during the years following.

Something that allows an organism to survive is called (a)n-

The following is an example of: A random change in a rabbit's DNA causes it to grow slightly longer ears than its parents. Many generations later, there is greater variation in ear length of the rabbit population.

The following scenario is an example: A bacterium develops resistance to an antibiotic due to a single alteration in its genetic code. The change is transmitted to offspring, rapidly spreading the antibiotic resistant trait throughout the population of bacteria.