What is point mutation?

Important Questions on Molecular Basis of Inheritance

HARD

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 40

Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?

MEDIUM

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 41

In an experiment, DNA is treated with a compound which tends to place itself amongst the stacks of nitrogenous base pairs. As a result of this, the distance between two consecutive base increases from 0.34nm to 0.44 nm Calculate the length of DNA double helix (which has 2

\times

10⁹ bp) in the presence of saturating amount of this compound.

HARD

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 42

What would happen if histones were to be mutated and made rich in acidic amino acids such as aspartic acid and glutamic acid in place of basic amino acids such as lysine and arginine?

HARD

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 43

During in vitro synthesis of DNA, a researcher used 2', 3' - dideoxycytidine triphosphate as raw nucleotide in place of 2'- deoxycytidine. What would be the consequence?

MEDIUM

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 44

What do you understand by the antiparallel arrangement of DNA strands?

MEDIUM

12th Karnataka Board

IMPORTANT

Biology Crash Course (Based on Revised Syllabus-2023)>Chapter 6 - Molecular Basis of Inheritance>Exercise>Q 45

Explain the base complementary rule. Name the scientist who formed this rule.

HARD

12th Karnataka Board