BOTANY

BOTANY

EPIGENETICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a gene is expressed, what is made?
A
a biologically active product like a protein
B
a protein that is biologically active of shut down until some point in future
C
mRNA
D
miRNA
Explanation: 

Detailed explanation-1: -For the gene to be expressed, the coding region is transcribed by the enzyme RNA polymerase into messenger RNA (mRNA), which in turn is translated into a string of amino acids, eventually yielding a three-dimensionally folded protein.

Detailed explanation-2: -The final product of gene expression is protein. When genes are “expressed” they are transcribed to mRNA and translated to protein.

Detailed explanation-3: -Protein products Proteins are the product of a gene that are formed from translation of a mature mRNA molecule. Proteins contain 4 elements in regards to their structure: primary, secondary, tertiary and quaternary. The linear amino acid sequence is also known as the primary structure.

Detailed explanation-4: -Gene expression is the process by which the information encoded in a gene is turned into a function. This mostly occurs via the transcription of RNA molecules that code for proteins or non-coding RNA molecules that serve other functions.

Detailed explanation-5: -During transcription, the enzyme RNA polymerase (green) uses DNA as a template to produce a pre-mRNA transcript (pink). The pre-mRNA is processed to form a mature mRNA molecule that can be translated to build the protein molecule (polypeptide) encoded by the original gene.

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