Home · NEET PYQs · Biology · Molecular Basis of Inheritance

NEET Molecular Basis of Inheritance PYQs with Solutions

54 previous year questions from Molecular Basis of Inheritance (NEET UG Biology) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

54 questionsBiology2026Answers + solutions

About Molecular Basis of Inheritance PYQs

Molecular Basis of Inheritance has 54 previous year questions in the Quantrex Academy NEET UG Biology bank. The 54 questions in this list come from MHT CET Medical (54), spanning 2026. Each question opens on its own page with the options, the correct answer and the worked solution where available.

NEET Molecular Basis of Inheritance PYQs with Solutions

About Molecular Basis of Inheritance PYQs

Questions by year (this list)

Molecular Basis of Inheritance questions with solutions

A 340\ Å long segment of DNA molecule has 40 thymine nitrogenous bases, what will be the number of guanine bases in the same segment?

The enzyme / proteins that prevent/s recoiling of the separated strands of DNA during replication is __________.

Given below are two statements: Statement I - Avery, Mc Carty and Mac Leod first evidenced to prove the DNA is a genetic material. Statement II - Hershey and Chase used

Formation of peptide bond between amino acids during translocation is catalyzed by __________.

In lac operon, which of the following acts as inducer and bind to repressor?

Wobble hypothesis is useful to explain the __________ property of genetic code.

Part of gene that is transcribed but NOT translated is __________.

Match the gene in Column I with its role in Column II. Column I (Gene) Column II (Role of gene) (A) Structural gene (I) Binding site for repressor (B) Operator gene (II) Codes for

Two different amino acids will never be encoded by the same codon, which property of genetic code does this represent?

During replication of DNA, formation of new strand takes place ____________.

The two strands in a DNA molecule are ________.

Wobble hypothesis explains which one of the following properties of genetic code?

In their experiment to prove DNA replication is semi-conservative, Meselson and Stahl used 6M CsCl because the density gradient value of 6M CsCl is ________ the density gradient

During DNA replication, Okazaki fragments are used to elongate _________.

The transforming principle in Griffith's experiment was detected _______.

Match the terms in List I with their correct descriptions in List II and choose the correct option. List I List II (A) Splicing (I) Polyadenylation. (B) Capping (II) Express

Which of the following step in DNA fingerprinting involves the movement of negatively charged DNA fragments to the positive pole?

Given below are two statements: Statement (I): The Human genome Project aims at transfering the related technologies to the private sectors, such as industries. Statement (II)

What is the role of the DHU arm of a tRNA molecule?

The nucleotide sequence of anticodon is complementary to nucleotide sequence present on________.

During replication the enzyme that forms double helix to form daughter DNA molecule is ___________.

If the number of adenine nitrogenous base in a given DNA segment is 25 and the number of guanine is 45, What would be the total number of nucleotides in that segment?

Given below are two statements: Statement I - The unit of DNA, in which replication occur is called replicon. Statement II - In eukaryotes, there is only one replicon whereas in

In protein synthesis, during elongation of a polypeptide chain, the charged tRNA carrying the aminoacid is received at ___ site and uncharged tRNA is released from ___ site of the

The repressor protein in lac operon is produced by the action of ________.

Along with Histone like DNA binding proteins which enzyme maintains supercoiled state in packaging of DNA in prokaryotes?

Given below are two statements. Statement I - RNA acts as biocatalyst and catalytic RNA is ribozyme. Statement II - Due to repeated replication and mutation, varieties of RNA

During replication of DNA, each separated parent DNA strand acts as ___________.

Identify the correct features of the genetic code. i. It is a triplet code. ii. It shows distinct polarity. iii. It is overlapping. iv. The genetic code was deciphered by Watson

Given below are two statements about DNA fingerprinting. Statement (I): The DNA probe used in DNA fingerprinting is a dsDNA obtained from organisms only. Statement (II): The DNA

In DNA, 20-100 base pairs which vary in every human being form ___________.

Meselson and Stahl proved the semi-conservative nature of DNA replication using the isotope ___.

In the chromosomes, DNA is associated with histone and non-histone proteins. This was reported in 1974 by -----------------.

Select the INCORRECT statement with respect to coding strand.

Select the INCORRECT statement from the following related to HGP.

In Homo sapiens , the estimated gene number is ________.

Which one of the following experiments by Griffith with Streptococcus pneumoniae , resulted in the death of mice due to pneumonia?

Given below are two statements regarding Lac operon. Statement (I): In Lac operon, in the absence of lactose, repressor protein binds to the operator gene and represses the

Which one of the following is INCORRECT about DNA fingerprinting?

Match List I with List II List I (Binding site of ribosome) List II (Substances associated) (A). P-site (I). Amino-acetyl tRNA (B). A-site (II). Peptidyl tRNA (C). E-site (III).

A promoter in a transcription unit is a DNA sequence ________.

In lactose operon of E. coli , what is the function of promoter?

In eukaryotes, the regulation of gene expressions can be at different levels EXCEPT:

Autoradiography in DNA fingerprinting is used to--

In a DNA strand, the nucleotides are linked together by-----------.

Hershey-Chase performed an experiment on------------------.

The enzyme that facilitates local unwinding of DNA duplex during transcription is-------------------.

Match List I with List II List I (Enzymes involved in DNA replication) List II (Function.) (A) Helicase (I) Forms double helix to form daughter DNA molecules. (B) DNA polymerase

Given below are two statements: Statement (I): DNA fingerprinting technique involves identifying similarities in VNTRs. Statement (II): The length of the regions having VNTRs is

Which one of the following is NOT the main aim of Human Genome Project ?

As in rDNA technology, in DNA fingerprinting, also, all the following techniques are used EXCEPT:

Identify the correct order of the following enzymes used during the process of replication of eukaryotic DNA. (A). DNA polymerase (B). DNA ligase (C). DNA helicase (D). DNA gyrase

The DNA probe used in DNA fingerprinting consists of ____(A)____ and labeled with ____(B)____. Choose the correct options for (A) and (B) respectively.

E. coli cells infected with bacteriophages having radioactive phosphorus are grown on medium containing normal phosphorus and sulphur and their daughter cells are centrifuged.

Main Molecular Basis of Inheritance list

Related NEET Biology chapters

In protein synthesis, during elongation of a polypeptide chain, the charged tRNA carrying the aminoacid is received at _ site and uncharged tRNA is released from _ site of the

The DNA probe used in DNA fingerprinting consists of (A) and labeled with (B). Choose the correct options for (A) and (B) respectively.