Gene Transcription I

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phenotype

Proteins are the links between genotype and ___

gene expression

___ ___ is the process by which DNA directs protein synthesis, includes two stages: transcription and translation

garrod

In 1909, British physician Archibald ___ first suggested that genes dictate phenotypes through enzymes that catalyze specific chemical reactions

metabolic pathway

Linking genes to enzymes required understanding that cells synthesize and degrade molecules in a series of steps, a ___ ___

gene, enzyme hypothesis

George Beadle and Edward Tatum developed a one ___- one ____ ___, which states that each gene dictates production of a specific enzyme ( now known as one gene- one protein hypothesis)

true

Some proteins are not enzymes. True or False

transcription

___ is the synthesis of RNA under the direction of DNA

translation

___ is the synthesis of a polypeptide, which occurs under the direction of mRNA

ribosome

The site of translation occurs in the ____

nucleoid

Transcription occurs in the ____region (prokaryotes)

processing

Eukaryotic RNA transcripts are modified through RNA ____ to yield finished mRNA

primary

A ____ transcript is the initial RNA transcrit of any gene

transcription

What is the first stage in gene expression called

polymerase

In transciption, the RNA syntheis is catalyzed by RNA ____, which pries the DNA strands

promoter, terminator

The DNA sequence where RNA polymerase attaches is called the ___; In bacteria, the sequence signaling the end of transcription is called the ___

transcription

The stretch of DNA that is transcribed is called the ____ unit

initiation, elongation, termination

During synthesis of an RNA transcript: the 3 stages of transcription are- (in order)

2

When aminoacyl-tRNA synthetase joins an amino acid to a tRNA, 3 ATP are used but ___ are lost

terminator

In bacteria, the polymerase stops transcription at the end of the ___ region

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