Which of the Following Explains Why It Is Often Easier

question 17

Multiple Choice

Which of the following explains why it is often easier to sequence a gene rather than sequence the corresponding protein?

• A) DNA sequencing can be performed on picogram quantities of DNA
• B) DNA is composed of only 4 different monomers while proteins are composed of 20 different monomers
• C) restriction endonucleases can be used to cut DNA at specific sequences to generate DNA fragments that can easily be sequenced
• D) all of the above
• E) both B and C are correct

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Definitions:

Pituitary Gland

A small, pea-sized gland located at the base of the brain, responsible for the production and secretion of hormones that regulate many bodily functions.

Gastrulation

An early embryonic process in which the single-layered blastula is reorganized into a multilayered structure known as the gastrula, forming the basic body plan.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the outer layer of skin, nails, hair, and nervous system.

Epiblast

A layer of cells in the early embryo from which all the various tissues and organs of the body will eventually develop.