2018 source guide · Biology

NEET 2018 Biology Genetics Questions

Use this page to connect the official 2018 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 275 verified questions →Check official NTA archive ↗

What to master

inheritance patterns, linkage, molecular genetics, gene expression and variation.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 3/5

During replication in E. coli, the two antiparallel strands of the parental duplex are copied differently. The lagging strand is synthesised discontinuously as short Okazaki fragments primarily because

A. helicase unwinds the duplex only ahead of the leading strand
B. DNA ligase can seal nicks only between leading-strand segments
C. RNA primers are synthesised exclusively on the lagging strand
D. DNA-dependent DNA polymerase catalyses polymerisation only in the 5'→3' direction

Example 2 · difficulty 3/5

The coding (sense) strand of a transcription unit reads 5'-ATGCCTGACT-3'. The sequence of the mRNA transcribed from this unit will be

A. 5'-TACGGACTGA-3'
B. 5'-UACGGACUGA-3'
C. 5'-AUGCCUGACU-3'
D. 5'-AGUCACGGCAU-3'

Example 3 · difficulty 2/5

The codons GAA and GAG both specify the amino acid glutamic acid. This observation illustrates which property of the genetic code?

A. The code is degenerate
B. The code is nearly universal
C. One codon codes for only one amino acid
D. AUG has dual functions

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Principles of Inheritance and Variation →Molecular Basis of Inheritance →

Frequently asked questions

Are these official NEET 2018 Biology Genetics PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2018 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.