Question

According to Mendel, a gamete generally contains __________.

• A. two alleles of a gene
• B. one allele of a gene
• C. multiple alleles of a gene
• D. all alleles of a gene

Hint:

Think of Mendel's law of segregation and what happens to the pair of alleles during gamete formation.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
Mendel's law of segregation states that the two alleles of a gene present in an individual separate from each other during gamete formation.

Step 2: Apply the law
Because the alleles separate, each gamete receives only one allele of each gene. The gamete is therefore pure for that trait.

Step 3: Conclusion
The paired condition is restored only at fertilisation, when two gametes fuse. So a gamete contains one allele of a gene.

Final Answer:
A gamete generally contains one allele of a gene. \[ \boxed{\text{(B) }\text{one allele of a gene}} \]