Question

How many of the following statements is/are true?
i) Alleles are located on different loci.
ii) An allele individually controls a trait.
iii) An allelic pair controls two traits.
iv) An allelic pair controls a single trait.

• A. One
• B. Two
• C. Four
• D. Three

Hint:

Alleles generally control a single trait, and they are located on different loci of homologous chromosomes.

Answer 1

The Correct Option is B

Step 1: Understanding the statements.
- Statement i) is true; alleles of a gene are typically located on different loci on homologous chromosomes.
- Statement ii) is false; an allele does not individually control a trait, but the interaction of alleles controls traits.
- Statement iii) is false; an allelic pair typically controls a single trait, not two traits.
- Statement iv) is true; an allelic pair controls a single trait, with one allele from each parent.
Step 2: Conclusion.
The correct answer is (B) Two, as only two statements are true.