AIPMT-MAINS Botany Molecular Basis of Inheritance Class 12 Questions

Read the following four statements (A⁻D): (A) In transcription, adenosine pairs with uracil. (B) Regulation of lac operon by repressor is referred to as positive regulation. (C) The human genome has approximately 50,000 genes. (D) Haemophilia is a sex-linked recessive disease. How many of the above statements are right?

Which one of the following represents a palindromic sequence in DNA?

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

In eukaryotic cell transcription, RNA splicing and RNA capping take place inside the

The lac operon consists of

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join

Removal of introns and joining the exons in a defined order in a transcription unit is called:

Semiconservative replication of DNA was first demonstrated in:

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a 'triplet'?

Point mutation involves:

The segment of DNA which acts as the instrumental manual for the synthesis of the protein is: