Alleles and Enzyme Production Variants — NEET Biology
🔥 Predicted for NEET 2027Let's take an example of a gene that contains the information for producing an enzyme. Now there are two copies of this gene, the two allelic forms. Let us assume (as is more common) that the normal allele produces the normal enzyme that is needed for the transformation of a substrate S. Theoretically, the modified allele could be responsible for production of –
Adjacent to a frequently-asked paragraph in the same chapter.
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F₁ generation all pink flowers were obtained. When pink flowers were selfed, the F₂ generation showed white, red and pink flowers. Choose the incorrect statement: (NEET 2019)
View solution & NCERT explanation
Correct answer: A — Law of segregation does not apply in this experiment.
The Law of Segregation still applies in this case. Each allele segregates during gamete formation. However, since red is not completely dominant over white, incomplete dominance is observed, and heterozygous (Rr) flowers are pink. The phenotypic ratio becomes 1 red : 2 pink : 1 white.
What does NCERT say about Lets take example gene?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.