Molecular basis of inheritance practice · Medium

In a DNA sample the proportion of ${A}$ is $17 \%$, the amount of ${G}+{T}$ and ${C}$ will be respectively.

In gel electrophoresis, separated DNA fragments can be visualized with the help of

The human chromosome with the highest and least number of genes in them are respectively

One of the following is true, with respect to AUG

Which of the following cannot act as inducer?

A human gene product can be produced by genetically engineered bacteria. This is possible because the

During replication of DNA, Okazaki fragments are formed in the direction of

If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?

The regions in chromatin which are lightly stained

Suppose, evolution on earth had occurred in such a way that there are 96 amino acids instead of 20. DNA has 12 different types of bases and DNA synthesis occurs in the same way as today. The minimum number of bases per DNA codon would be

In Lac operon, the product of ‘i’ gene binds to the operator

Mutation is due to?

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

Assertion: In eukaryotes, the sequence of nucleotides of mRNA is same as that of template except for the difference of T and U.
Reason: In eukaryotes antisense strand is complementary to sense strand and mRNA is complementary to coding strand.

A bacterium grown over medium having radioactive $^{35}S$ incorporates radioactivity in

Which of the following is word as probe?

What type of viruses are produced after the death of $E$. coli, if a $T_2$ phage having radioactive sulfur infects bacteria growing on normal nutrient medium?

In prokaryotes, the process of replication is catalysed by the following enzymes. Identify which of the enzymes is best coordinate with role.

Choose the incorrect statement w.r.t. structure of DNA proposed by Watson and Crick.

One E.coli bacterium contains a hybrid DNA with one heavy $\mathrm{N}^{15}$ strand and one light $\mathrm{N}^{14}$ strand. It was allowed to replicate for 3 hours in a medium containing $\mathrm{N}^{15}$. What proportion of E.coli which will neither float nor sink in the test tube on ultra-centrifugation with $\mathrm{CsCl}$ ?

Which of the following is similar in DNA of elephant and mango tree

A DNA strand with the sequence AACGTAACG is transcribed. What is the sequence of the mRNA molecule synthesized?

In a DNA molecule, distance between two based is

What is not true for genetic code?

The net electric charge on DNA and histones is?

To code 50 amino acids in a poly peptide chain what will be the minimum number of nucleotides in it’s cistron

If a DNA sequence is same as that of a mRNA copy that is translated into protein, it is called

Choose the odd one w.r.t. requirement of DNA replication on template with polarity $3^{\prime} \rightarrow 5^{\prime}$.

How many amino acids will be present in a polypeptide chain when genetic information flows from the following stretch of DNA?

3' TACCATGC ATGCATC 5' Template strand

5' ATGCGTACG TACGTAG 3' Coding strand

Statements
I. The four nucleotide bases are not necessarily present in DNA in exact equal
proportions.
II. The total amount of purines are equal to the total amount of pyrimidines.
III. DNA ligase enzyme act to hydrolyse or breakdown a polynucleotide chain into
its component nucleotides.
IV. Nuclease enzymes are capable of restoring an intact DNA duplex.
Of the above statements