NEET 2015 · Class 12

Principles of Inheritance and Variation

Alleles are :

  1. (A)true breeding homozygotes
  2. (B)different molecular forms of a gene
  3. (C)heterozygotes
  4. (D)different phenotype

The NCERT line that answers it

Verbatim line

Genes which code for a pair of contrasting traits are known as **alleles**, i.e., they are slightly different forms of the same gene.

Chapter
Principles of Inheritance and Variation
Section
4.2 INHERITANCE OF ONE GENE
Page
5
Words matched
23 of 23

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

5, emb=1.0, combined=0.8). Verified: high — The span explicitly states 'they are slightly different forms of the same gene', which directly matches option B's definition of alleles as 'different molecular forms of a gene'.

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