Question

Assertion: Replication and transcription occur in the nucleus but translation occurs in the cytoplasm.
Reason: mRNA is transferred from the nucleus into the cytoplasm where the ribosomes and amino acids are available for protein synthesis.
(a)Both assertion and reason are correct and the reason is the correct explanation for the assertion.
(b)Both assertion and reason are correct and the reason is not the correct explanation for the assertion.
(c)The assertion is correct but the reason is incorrect.
(d)Both assertion and reason are incorrect.

Answer 1

Hint: Each time a cell partitions, every one of its double strands of DNA parts into two single strands. Each of those single strands acts as a template for a replacement strand of complementary DNA. Accordingly, each new cell has its own total genome.

Complete answer:
Replication is the process of formation of daughter DNA molecules by DNA polymerase enzyme using the prevailing DNA strands as a template. Transcription is that the process of RNA synthesis using the DNA template strand which is administered by RNA polymerase; any of the 2 DNA strands can function as a template. Since DNA and therefore the enzymatic machinery for replication and transcription are present within the nucleus, the processes of replication and transcription occur within the nucleus only. The primary transcript, framed by the technique for the transcription, is then altered by means of post-transcriptional changes into developing mRNA which is then moved to the cytoplasm through nuclear pores where ribosomes
(the site for protein synthesis) and amino alkanoic acid s (monomer for protein synthesis present within the amino acid pool of cytoplasm) are present to hold out the method of translation i.e. synthesis of polypeptides by polymerization of amino acids on ribosomes using the mRNA triplets as a template.

Additional information
DNA replication isn't perfect. Errors happen in DNA replication when some unacceptable base is fused into the developing DNA strand. This results in mismatched base pairs, or mispairs. DNA polymerases have proofreading activity, and DNA repair enzymes have evolved to correct these mistakes. Occasionally, within the next round of replication mispairs survive and are incorporated into the genome. These mutations may haven't any consequence, they'll end in the death of the organism, they'll end in genetic disorder or cancer; or they'll give the organism a competitive advantage over its neighbors, which results in evolution by survival.

So the correct answer is ‘Both assertion and reason are correct and therefore the reason is that the correct explanation for the assertion’.

Note: The mechanism of transcription has parallels therein of DNA replication. like DNA replication, the partial unwinding of the helix must occur before transcription can happen, and it's the RNA polymerase enzymes that catalyze this process. Ribonucleoside triphosphates (NTPs) adjust along the antisense DNA strand, with Watson-Crick base blending (A sets with U). RNA polymerase joins the ribonucleotides together to make a pre-messenger RNA molecule that's complementary to a neighborhood of the antisense DNA strand.