HEREDITY
MUTATIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
An exact copy of DNA
|
|
|
A complimentary strand of mRNA
|
|
|
A complimentary strand of tRNA
|
|
|
A strand of multiple amino acids held together with peptide bonds
|
Detailed explanation-1: -Transcription has three stages: initiation, elongation, and termination.
Detailed explanation-2: -The product of transcription is RNA, which can be encountered in the form mRNA, tRNA or rRNA while the product of translation is a polypeptide amino acid chain, which forms a protein. Transcription occurs in the nucleus in eukaryotic organisms, while translation occurs in the cytoplasm and endoplasmic reticulum.
Detailed explanation-3: -mRNA is formed as a complementary strand to one of the two strands of the DNA. Three of the four nitrogenous bases that make up RNA-adenine (A), cytosine (C), and guanine (G)-are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine.
Detailed explanation-4: -The process in which the genetic message in DNA is copied into mRNA is called transcription. This mRNA is used to make protein molecules by the process of translation. This is the central dogma of protein synthesis. Hence the final product of a gene is a polypeptide.
Detailed explanation-5: -Complementary DNA (cDNA) is a DNA copy of a messenger RNA (mRNA) molecule produced by reverse transcriptase, a DNA polymerase that can use either DNA or RNA as a template.