The net electric charge on DNA and histones is
both positive
both negative
Both (a) and (b)
zero
The promoter site and the terminator site for transcription are located at
$3^{\prime}$ (downstream) end and $5^{\prime}$ (upstream) end, respectively of the transcription unit
$5^{\prime}$ (upstream) end and $3^{\prime}$ (downstream) end, respectively of the transcription unit
the $3^{\prime}$ (downstream) end
Which of the following statements is the most appropriate for sickle-cell anaemia?
It cannot be treated with iron supplements
It is a molecular disease
It confers resistance to acquiring malaria
All of the above
One of the following is true with respect to AUG
it codes for methionine only
it is also an initiation codon
it codes for methionine in both prokaryotes and eukaryotes
All of the above
The first genetic material could be
protein
carbohydrates
DNA
RNA