Genetics practice focused on inheritance patterns, linkage, molecular genetics, gene expression and variation. Every preview below comes from NeetVellum's live original bank—not an unverified PYQ reconstruction.
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
In a cross between pure round-yellow (RRYY) and wrinkled-green (rryy) pea plants, all F1 progeny were round-yellow. If 320 F2 offspring are raised by selfing the F1 plants, how many of them are expected to be heterozygous for both seed shape and seed colour?
A. 20
B. 40
C. 60
D. 80
Example 2 · difficulty 2/5
A man with blood group AB marries a woman with blood group O. According to the multiple allelism concept of the ABO system, what are the possible blood groups of their biological children?
A. Only group AB
B. Only group O
C. Group A or group B in equal proportions
D. Any one of the four groups A, B, AB or O
Example 3 · difficulty 3/5
A man suffering from haemophilia, an X-linked recessive disorder, marries a woman who is homozygously normal for the gene concerned. Which one of the following statements about their offspring is correct?
A. All of their sons will be haemophilic.
B. All of their daughters will be carriers.
C. Half of their daughters will be haemophilic.
D. Half of their sons will be haemophilic.
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.