Since Watson and Crick Described DNA in 1953, Which of the Following

question 29

Multiple Choice

Since Watson and Crick described DNA in 1953, which of the following might best explain why the function of small RNAs (miRNAs) is still not well understood?

• A) As RNAs have evolved since that time, they have taken on new functions.
• B) Watson and Crick described DNA but did not predict any function for RNA.
• C) The functions of small RNAs could not be approached until the entire human genome was sequenced.
• D) Ethical considerations prevented scientists from exploring this material until recently.
• E) Recent advances in technology and our understanding of how DNA is expressed have made this possible.

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Definitions:

Glomeromycetes

Fungi that partner with plant roots; their hyphae grow inside cell walls of root cells.

Soil Fungi

Fungi that live in the soil, playing critical roles in nutrient cycling, organic matter decomposition, and as symbionts or pathogens of plants.

Hyphae

The long, branching filamentous structures of fungi, which collectively form the mycelium and are the primary mode of vegetative growth.

Hyphae

The long, thread-like structures that make up the body of fungi and some prokaryotic organisms.