Write 'True' or 'False':
Hind II always join DNA molecules at specific site by recognising a particular sequence of six base pairs.

Write 'True' or 'False': Exonucleases remove nucleotides at specific positions within DNA.

Write the sequence of DNA bases that this enzyme recognises?

Write " True" or "False" In a nucleotide, purine or pyrimidine nitrogenous base is joined by deoxyribose sugar which is further linked to phosphate.

Two questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you required to choose any one of the following four responses. If both Assertion and Reason are true and Reason is a correct explanation of Assertion. If both Assertion and Reason are true and Reasons is not a correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertions and Reasons are false. Assertion:Three main types of restriction endonucleases i.e., Type I, Type II and Type III are known with slightly different mode of action. Reason:In palindromes with rotational symmetry second half of complementary strand in DNA double helix is the mirror image of base sequence in the first half of another strand.

These questions consist two statements each, printed as Assertion and Reason. While answering these questions you are required to choose any one of the following four responses. If both Assertion and Reason are true and Reason is correct explanation of Assertion. If both Assertion and Reason are true but Reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:DNA fingerprints involves identifying difference in some specific regions in DNA sequences. Reason: In repetitive DNA sequences, a small stretch of DNA in repeated many times.

True and False Type Questions Mutation due to change in a single base pair of DNA is point mutation.