2023 source guide · Biology

NEET 2023 Biology Genetics Questions

Use this page to connect the official 2023 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 2/5

In the self-cross RrYy × RrYy, where round and yellow are dominant, 160 offspring are obtained. Which expected distribution follows the dihybrid phenotypic ratio?

A. 80 round yellow, 40 round green, 20 wrinkled yellow, 20 wrinkled green
B. 90 round yellow, 30 round green, 30 wrinkled yellow, 10 wrinkled green
C. 120 round yellow, 20 round green, 10 wrinkled yellow, 10 wrinkled green
D. 40 of each phenotype

Example 2 · difficulty 2/5

What was the major inference from the appearance of round-green and wrinkled-yellow seeds in the F₂ generation of Mendel's dihybrid cross involving seed shape and colour?

A. Dominant alleles always remain together
B. Recessive alleles permanently modify dominant alleles
C. Alleles of different gene pairs can assort independently
D. Seed shape determines seed colour

Example 3 · difficulty 1/5

An RrYy pea plant is test-crossed. What phenotypic ratio is expected if the two gene pairs assort independently and show complete dominance?

A. 9:3:3:1
B. 3:1
C. 1:2:1
D. 1:1:1:1

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 2023 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 2023 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.