The First Step in Eukaryotic Pre-MRNA Splicing Is

question 66

Multiple Choice

The first step in eukaryotic pre-mRNA splicing is

• A) ligation of the two exon sequences.
• B) cleavage of the intron sequence at the branch site.
• C) ligation of the branch site adenosine to the 5' end of the intron.
• D) cleavage of the intron sequence at the 3' end.
• E) ligation of U1 snRNA to the branch site.

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Definitions:

American Mutoscope

An early motion picture company and the creator of the Mutoscope, a device for viewing moving pictures by flipping through a series of photographs.

Biograph Company

An early American motion picture company known as one of the most significant and influential studios in the film industry's formative years.

Panning-Head Tripod

A type of tripod head that allows for smooth horizontal camera movements, commonly used in video and film production for stable panning shots.

Georges Méliès

A French illusionist and filmmaker famous for his creative special effects and storytelling in early cinema, notably in "A Trip to the Moon."