Structure of DNA and DNA Packaging

Identify the scientists who proposed that DNA replication is semiconservative and the one who proved it experimentally:

Which of the following represents the complementary pairs?

In a DNA, one chain contains 22 thymine and its opposite chain contains 28 guanine. Then what is the length of the DNA in ${\mathrm{A}}^{\mathrm{o}}$?

Identify the correct statement:

If there is 500 nucleotide DNA chain, find out how many phosphodiester bonds present in it.

What is B-DNA pitch?

If a DNA segment is approximately $340 \mathrm{nm}$ long, how many base pairs would be present?

In a DNA percentage of thymine is $20\%$ then what will be the percentage of guanine?

DNA is associated with basic protein:

Arrange the following biological discoveries in the correct chronology from the earliest to the latest.
i. British biochemist Frederick Sanger introduces his 'plus and minus' method for DNA sequencing.
ii. American scientists Walter Gilbert and Allan Maxam introduce their method of DNA sequencing using chemical processes to terminate DNA strands.
iii. Swiss physician Friedrich Miescher discovers and isolates DNA
iv. Canadian-American researchers Oswald Avery and Colin Munro MacLeod, along with American geneticist Maclyn McCarty, working on experiments on pneumococcal bacteria, establish that DNA could transform the properties of cells.
v. American biologist James Watson and English physicist Francis Crick discover the double helix when solving the three-dimensional structure of DNA, working from crystallographic data produced by Rosalind Franklin and Maurice Wilkins.

Identify the correct combination.

How many histone molecules are required to wrap roughly $60,000$ base pairs ($\mathrm{bp}$) of DNA?

Coiling of chromatids in mitotic and meiotic division is

A bacteriophage $\mathrm{T}2$ particle contains within its head a double-stranded $\mathrm{B}$-from DNA of molecular weight $1.2\times {10}^8 \mathrm{Da}.$ Assume that the head of a $\mathrm{T}2$ Phage particle is of $210\mathrm{nm}$ in length and the average molecular weight of a nucleotide is $330 \mathrm{Da}.$ The length of the $\mathrm{T}2$ genome is in the range of

Which of the following Nitrogen bases is found only in DNA ?

Nucleoside is a nucleotide without _____.

Who proposed the double-helical structure for DNA?

A newly discovered organism possesses a genetic material with a new base composition consisting of the sugar and phosphate backbone as found in existing natural $\mathrm{DNA}$. The five novel bases in this genetic material-namely, $P,Q,R,S,T$ are heterocyclic structures with $1,1,2,2$ and $3$ rings, respectively. Assuming the new $\mathrm{DNA}$ forms a double helix of uniform width, which one of the following would be the most appropriate base pairing?

A novel species with double-stranded genetic material consists of $5$ bases namely $\mathrm{P},\mathrm{Q},\mathrm{R},\mathrm{S},\mathrm{T},$ with percentage given below.