Download App

Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
Which of the following statement is not true for genetic code?
  • ✓
    A codon in $\text{mRNA}$ is read in a non$-$contiguous fashion.
  • B
    It is nearly universal.
  • C
    It is degenerate.
  • D
    It is unambiguous.
✓

Answer

Correct option: A.
A codon in $\text{mRNA}$ is read in a non$-$contiguous fashion.
  1. Codon in $\text{mRNA}$ consists of three nucleotides and is read in a contiguous manner.
  2. Genetic code is same in every organism with some exceptions. Hence, it is nearly universal.
  3. Genetic code is degenerate as more than one codon may code for an amino acid.
  4. Genetic code is unambiguous as a particular codon will always code for the same amino acid

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Molecular Basis of Inheritance→Molecular Basis of Inheritance — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

The most quickly available source of nitrogen to plants are:
→
In Mendel's experiments with garden pea, round seed shape $(RR)$ was dominant over wrinkled seeds $(rr),$ yellow cotyledon $(YY)$ was dominant over green cotyledon $(yy).$ What are the expected phenotypes in the $F_{2}$ - generation of the cross $RRYY$ $\times$ $rryy$?
→
How many genetically different strain of Rice in India ?
→
Which of the following is not a method of ex situ conservation?
→
$\text{AIDS}$ is caused by $\text{HIV}.$ Among the following, which one is not a mode of transmission of $\text{HIV}?$
→
Microparticles for coating with $\text{DNA}$ to be bombarded with gene gun are made of:
→
Genes $A, B$ and $C$ are linked. Genes $A$ and $B$ are more close than $A$ and $C.$ Find out the correct option for the given statements

$I.$ $A$ might be before $B$ and $C$

$II.$ $B$ might be between $A$ and $C$

$III.$ $C$ might be between $A$ and $B$

$IV.$ More crosses has occurred between $A$ and $C$ than $A$ and $B$

→
Production of a human protein in bacteria by genetic engineering is possible because
→
In polygenic inheritance, the example of effect of environment is:
→
When an individual is having both the alleles of a contrasting character, it is said to be
→