Evolution

The flippers of a dolphin and the front legs of a dog are

While observing birds of the Galapagos Islands, Darwin was intrigued by the

A pattern where species experience long, stable periods interrupted by rapid evolutionary

Which factor might determine whether the frequency of the new allele will increase?

One similarity between natural selection and genetic drift is that both events

The geographic isolation of two populations of a species tends to increase genetic differences.

__ is the principle that all species came from common ancestors.

Example: the number of insects less than 5 mm in length increased what can you conclude?

A population of finches where group 1 has a short beak and another group has a long, beak,

Which of the following events do biologists consider a random change?

Darwin began to formulate his concept of evolution by natural selection after

All the genes of all members of a particular population make up the population’s

Natural selection acts directly on

According to the theory of natural selection, individuals that tend to survive are those whose

Which concept is NOT included in the modern theory of evolution?

The process in which change occurs over a period of time is known as

A change in a sequence of DNA is called a

Natural selection could not occur without

Evolution by natural selection produces species that

A single species that has evolved into several different forms has undergone

Which statement about evolution in the Galápagos finches is true?

Which of the following statements describe what all members of a population share?

What evidence did Darwin have that contradicted the belief that all life forms were unchanged?

In humans, the pelvis and thigh bone, are involved in walking. In whales, the pelvis and femur

Two species that are closely related become increasingly different through

A scientist observed color variations in a species that are in equal amounts. What can you see?

The development of many different dog breeds is a direct result of

What role do humans play in artificial selection?

Which of the following ideas proposed by Lamarck was later found to be incorrect?

An understanding of evolution provides a biologist with

When individuals with an average form of a trait have the highest fitness, the result is

In the past, mass extinctions encouraged the rapid evolution of surviving species

Modern sea star larvae resemble some primitive vertebrate larvae. This similarity may suggests

The separation of populations by barriers like rivers, mountains, or bodies of water is called

The large ground finch obtains food by cracking seeds. Its short, strong beak is an example of

In 1859, Charles Darwin published his revolutionary scientific ideas in a work titled