What Shape in an Age-Structure Chart Would Best Illustrate the Effects

question 53

Multiple Choice

What shape in an age-structure chart would best illustrate the effects of the baby-boom in the United States in 2012?

• A) classic pyramid
• B) wide base that narrows rapidly
• C) narrow base and wide top
• D) stable base with a slight bulge near the top
• E) stable base with a slight bulge near the bottom

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Definitions:

PolyA Tail

A stretch of adenine nucleotides attached to the 3' end of eukaryotic mRNA molecules, aiding in their stability and translation.

Introns

Regions of an RNA transcript, or its DNA template, which are removed before the RNA is translated into a protein, and do not code for protein.

Transcription

The process by which the information in a strand of DNA is copied into a new molecule of messenger RNA.

Zinc Finger

A small protein structural motif that is characterized by the coordination of one or more zinc ions in order to stabilize the fold.