When did Watson and Crick propose the $DNA$ double helix model?

$DNA$ elements, which can switch their position, are called:

Give the differences between $DNA$ and $RNA$.

Why are histone proteins positively charged?

$A$ $DNA$ fragment contains $120$ adenine and $120$ cytosine bases. What is the total number of nucleotides present in this fragment?

Select the option that represents the organisms in ascending order of their $DNA$ length.