__________ are better adapted to their environment and produce more offspring allowing the __________ to evolve.

When genes flow into an area, it __________ the genetic variation of the population, but when genes flow out of an area it __________ the genetic variation of the population.

Which taxonomic levels are used to create a scientific name?

This cladogram shows the evolutionary relationships among some mammals based on homologous structures.

Which statement is supported by this cladogram?

In 2010, scientists excavated a skull fossil that provides evidence of a newly discovered species of big cat. Based on the evidence, scientists 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?

Zoogeographic regions are characterized by the presence of specific groups of animals. These regions are determined by the taxonomic or phylogenetic relationships of animals. The  map shows the zoogeographic regions proposed by the naturalist Alfred Russel Wallace in 1876.

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations?

After examining the fossil record, scientists have determined that scorpions today are much smaller than their extinct ancestors. For example, Jaekelopterus rhenaniae, a giant scorpion species that lived 255 million to 460 million years ago, was 2.5 meters long. Which of the following conclusions is supported by this information?

Two scientists studied patterns of evolution in the fossil record. Many species they analyzed showed periods of slow changes interrupted by a period of rapid change.

This pattern of periods of slow change interrupted by periods of rapid change with few, if ay transitional fossils, best describes the theory of —

Male guppies found in areas without predators are more colorful than the ones found in locations with large predator populations. A population of adult guppies originating from an area with a large number of predators is transferred to a nearby area with few predators.

Which of these is most likely to happen over a few generations?

The graphs show changes in allele frequencies in a population at three points in time as a drought becomes more severe.

Which statement best describes how natural selection affects alleles?

Blue flying fish live in the upper layers of the ocean. Blue flying fish have enlarged pectoral fins that enable them to glide for 400 meters above the ocean surface and appear to fly.

Which statement best describes how natural selection led to enlarged pectoral fins in blue flying fish?

A student researches the average number of offspring that six species produce during their lifetime and creates the table shown.

Based on the data, which species will MOST LIKELY experience the highest rate of evolution?

The table shows the survival rate of two types of beetles in the same environment over a period of three years.

Which statement about the beetles in this environment is best supported by the data?

A large population of rock pocket mice with various fur colors lives in a designated area. Soon after a volcanic eruption, the number of mice with dark-colored fur in the population increased.

Which statement BEST describes the reason for the change in fur color?

Two populations of mice living in the same forest are separated by a large water-filled ditch. After a rainstorm, flooding brings several mice from one population to the other population. When the mice from the first population reproduce with members of the second population, which of the following will likely occur?

A population of organisms contains multiple alleles for a particular trait. A biologist assigns each allele a letter from M through T and tracks the frequency in a population. A small group of organisms travels to a new location and begins a new population.

The biologist tracked the allele frequency for the trait in the original population and the small group and recorded the data in the tables shown.

Which table shows the MOST LIKELY allele frequency of the new population?

The gray squirrel, Easter fox squirrel, and red squirrel are all different species of squirrels. Why is having a scientific name for each species of an organism important?

A student sees a red wolf at the zoo and wants to research specific information about the animal.

Which levels of taxonomy are BEST to use when researching information about the red wolf?

Many tree frog populations are threatened due to habitat loss. In an effort to promote conservation, tree frogs may be bred in captivity. A zoo acquired male and female tree frogs from two different populations. In the zoo, the tree frogs were able to successfully mate within their own population, but breeding attempts between the two populations were unsuccessful.

Based on this information, which statement correctly describes the relationship between the two populations of tree frogs?

Using a light microscope, a student identified the following characteristics of four organisms found in a sample of pond water.

Based on the observations of the student, which organisms most likely belong to the taxonomic group for bacteria?

The diagram shows taxonomic groups and a major distinguishing characteristic of all but two of them.

Which characteristics will be used to complete the chart?