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NEETZoologyPrinciples of Inheritance and Variation

How are alleles described?

Options

  1. AIdentical forms of the same gene
  2. BDifferent genes altogether
  3. CSlightly different forms of the same gene
  4. DCompletely different genes

Correct answer

C. Slightly different forms of the same gene

Step-by-step solution

Based on these observations, Mendel proposed that something was being stably passed down, unchanged, from parent to offspring through the gametes, over successive generations. He called these things as ‘factors’. Now we call them as genes. Genes, therefore, are the units of inheritance. They contain the information that is required to express a particular trait in an organism. Genes which code for a pair of contrasting traits are known as alleles, i.e., they are slightly different forms of the same gene.

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