Question

In eukaryotes, structural gene is
monocistronic. It means
different type of polypeptides are synthesised
from only one gene
this gene has only one intron
this gene synthesises only one type of
polypeptide
many introns present on a single gene​

Answer 1

ANSWER:

This gene synthesis only one type of polypeptide.

EXPLANATION:

CISTRON:

• This is the functional unit of gene that synthesise polypeptide.

• Depending on the number of polypeptides synthesized , they are classified into monocistronic and polycistronic.

MONOCISTRONIC:

• Monocistronic gene synthesize only one type of polypeptide .

• Eukaryotic gene belongs to this type.

POLYCISTRONIC:

• In prokaryotes , the structural gene produces many polypeptides.

• This type of gene is called polycistronic.

FACTS RELATED TO QUESTION:

EXONS:

• These are the coding sequences of gene.

INTRONS:

• In eukaryotes, the EXONS are interrupted by non coding sequence called INTRONS.

• Introns are absent in prokaryotes.

• In eukaryotes, the introns must be spliced before translation.

• Splicing is not required in case of prokaryotes ,since they don't have introns.

RELATABLE TERMS:

• REPLICATION : It is the process of producing the exact copy.

• TRANSCRIPTION: It is the process of converting DNA into mRNA.

• REVERSE TRANSCRIPTION: It is the process of converting RNA into DNA. It usually takes place in group of viruses called retro virus.

• TRANSLATION: It is the process of converting mRNA into proteins.