EVOLUTION

Front

Two organisms that are closely related would have:
- very similar DNA sequence
- exactly the same DNA sequences
- no proteins in common
- completely different DNA sequence

Back

very similar DNA sequence

Front

The arm of a human, the flipper of a whale, and the wing of a bat all have similar bone structures. Therefore, these parts of the body would all be considered...

Back

homologous structures

Front

A bird's wing and a butterfly's wing have the same function, but they have very different structures. These structures are classified as follows:

homologous structures

,

analogous structures

,

vestigial structures

,

embryological homologues

Back

analogous structures

Front

The process by which populations slowly change over time is called

Back

evolution

Front

Which of the following would be an example of homologous structures?

• the trunk of an elephant, the snout of a pig, and the nose of a dog
• the wings of a bat and the wings of a butterfly
• the tale of a dolphin and the hump on a camel’s back
• the arm bones of an ape and the front leg bones of a horse

Back

the arm bones of an ape and the front leg bones of a horse

Front

What do similarities between different species indicate according to evolutionary biologists?

Back

The presence of a common ancestor in a species

Front

The tail bone, wisdom teeth, and appendix are all parts of the human anatomy that would be considered..

Back

vestigial structures

Front

The tail bone, wisdom teeth, and appendix are all parts of the human anatomy that would be considered...

Back

vestigial structures

Front

According to evolutionists, which is the best test to show the relatedness of two organisms?

Back

Similarity of amino acid sequence in DNA

Front

Which of the following statements best explains the Theory of Natural Selection?
1. Acquired characteristics of parents can be passed on to offspring.
2. Organs that are not used may disappear, while organs that are constantly used may develop.
3. In nature, the organism with desirable characteristics may survive, while those with weaker traits may not.
4. Organisms develop desirable structures to survive in a given environment.

Back

In nature, the organism with desirable characteristics may survive, while those with weaker traits may not.