In Evolutionary Trees, More Closely Related Species Are Grouped More

question 40

Multiple Choice

In evolutionary trees, more closely related species are grouped more closely together. These days, how do scientists determine where to put species when they are constructing evolutionary trees to map evolutionary history?

• A) They guess based on the physical traits of the species.
• B) They use a computer to determine relatedness based on the physical traits of the species.
• C) They use a computer to determine relatedness based on DNA sequences.
• D) More distantly related species are grouped together.
• E) Groups more closely related to each other are put closest to the common ancestor.

---

Definitions:

Skinner

B.F. Skinner, an influential American psychologist known for his work in behaviorism and the development of the theory of operant conditioning.

Pavlov

A Russian physiologist known for his work in classical conditioning, demonstrating how stimuli can trigger conditioned responses.

Skinner Box

An experimental apparatus developed by B.F. Skinner for studying behavioral conditioning in animals, typically involving rewards and/or punishments.

Rubik's Cube

A 3D combination puzzle invented by Ernő Rubik in 1974, consisting of a cube with each of its six faces covered by nine stickers, each of one of six solid colors.