The X chromosome is

A. larger than the Y chromosome.
B. smaller than the Y chromosome.
C. the same size as the Y chromosome.
D. genetically identical to the Y chromosome.
E. larger and genetically identical to the Y chromosome.


A. larger than the Y chromosome.

Biology & Microbiology

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Which of the following could be classified as a "transitional form" fossil?

A. Hyracotherium, the first fossil of a horse that was found 55 mya. B. An early amphibian tetrapod from 360 mya. C. A clam shell laying at the bottom of the ocean. D. A fossil that has all of the ancestors traits and none of the present day animals traits. E. A fossil that has some ancestoral traits and some traits that are found in present day animals.

Biology & Microbiology

During the course of Darwin's journey aboard the HMS Beagle he was collecting and recording _____  and ________.

A. religious; political evidence B. fossils; geological evidence C. historical; biological evidence D. geological; biological diversity evidence E. biological; genetic evidence

Biology & Microbiology

What would you find in the heart of an amphibian?

A. two atria and one ventricle B. two atria and two ventricles C. two atria and a partially divided ventricle D. one atrium and one ventricle E. one atrium and two ventricles

Biology & Microbiology

The greenhouse effect is due to high levels of which gas in the environment?

A. carbon dioxide B. carbon monoxide C. nitrogen D. ammonia E. oxygen

Biology & Microbiology