FREE NEET Biology Practice MCQ Test: Molecular Basis Of Inheritance Exercise 2 Questions Answers With Detailed Explanations [PDF]

A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease ?

Reverse transcriptase is

Both deoxyribose and ribose belong to a class of sugars called

The telomeres of eukaryotic chromosomes consist of short sequences of

The okazaki fragments in DNA chain growth

The unequivocal proof of DNA as the genetic material came from the studies on a

Choose the correct statements about biochemical characterisation of transforming principle in Griffith's experiment.

1. It was done by Oswald Avery, Colin MacLeod and MaclynMcCarty.
2. Scientists purified biochemicals (proteins, DNA, RNA, etc.) from heat killed S-cell.
3. It was seen that DNA alone from S-bacteria caused R-bacteria to become transformed .
4. Proteases and RNases did not affect transformation.

In the given diagram of chemical structure of DNA, identify the type of bonding shown by A, B and C.

Which of the following is not required for any of the techniques of DNA fingerprinting available at present? [NEET - I, 2016]

Percentage of similarity between the nucleotides of two individuals is

Read the following statements and choose the incorrect statements.

1. Nitrogenous base is linked to the pentose sugar through a N-glycosidic linkage.
2. Phosphate group is linked to 5¢–OH of a nucleoside through phosphoester linkage.
3. Two nucleosides are linked through 3¢–5¢Nglycosidic linkage.
4. Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome.
5. The chromatin that is more densely packed and stains dark is called euchromatin.

The strand which do not code for anything is called

The two strands of DNA are held together by

In DNA, when AGCT occurs, their association is as per which of the following pair?

Experimental material in the study of DNA replication has been

The following ratio is generally constant for a given species:

DNA is a polymer of nucleotides are linked to each other by3’–5’ phosphodiester bond. To prevent polymerisation of nucleotides, which of the following modifications would you choose?

Protein synthesis in an animal cell takes place

The initial structure formed at the beginning of coiling of DNA around histones is

During translation, proteins are synthesized by