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During DNA replication, Okazaki fragments used to elongateCorrectIncorrect
Which of the following statements is not true of two genes that show 50% recombination frequency?CorrectIncorrect
There are special proteins that help to open up DNA double helix in front of the replication fork. These proteins areCorrectIncorrect
Spliceosomes are not found in cells ofCorrectIncorrect
If there are 999 bases in an RNA that code for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?CorrectIncorrect
Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?CorrectIncorrect
A geneticist isolates a gene for a specific trait under study, she also isolates the corresponding mRNA. Upon comparison, the mRNA is found to contain 1,000 fewer bases than the DNA sequence. Did the geneticist isolate the wrong DNA ?CorrectIncorrect
Read the following statements and choose the correct option.
(i)Nitrogenous base in linked to the pentose sugar through a N-glycosidic linkage.
(ii)Phosphate group is linked to 5¢–OH of a nucleoside through phosphoester linkage.
(iii)Two nucleosides are linked through 3¢–5¢Nglycosidic linkage.
(iv)Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome.
(v)The chromatin that is more densely packed and stains dark is called euchromatin.CorrectIncorrect
Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria haveCorrectIncorrect
‘Lac operon’ in E. coli, is induced byCorrectIncorrect