A Computer Program Recognizes an ORF by Looking for Ribosomal

question 27

Multiple Choice

A computer program recognizes an ORF by looking for ribosomal binding sites,start codons,and stop codons with an appropriate number of nucleotides between each element.What is a drawback of this approach?

• A) Too many ORFS are identified, most of which are stretches on non-coding junk DNA.
• B) Codon bias causes incorrect annotations.
• C) Unusual, but legitimate genes and non-coding RNA may be missed.
• D) We lack the computing power to complete the analyses in a timely manner, thus many genomes are only partially annotated.

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Definitions:

Optic Chiasma

A structure in the brain where the optic nerves (II) partially cross, involved in the visual system.

Visual Field

The entire area that can be seen when the eyes are directed forward, including what can be seen peripherally.

Optic Tracts

Nerve pathways traveling from the optic chiasma to the thalamus in the brain, important for the transmission of visual information.

Diencephalon

The diencephalon is a region of the brain that includes structures such as the thalamus and hypothalamus, involved in sensory and autonomic functions.