Which of the following correctly represents the law of segregation?

Correct option is B

The correct answer is (b) 3:1

Explanation:

• The Law of Segregation is Mendel's first law of inheritance.
• It states that during gamete formation, the two alleles for a trait separate so that each gamete receives only one allele.
• In a monohybrid cross (e.g., crossing tall and dwarf pea plants), the phenotypic ratio in the F2 generation is 3:1 (3 tall : 1 dwarf).
• This confirms that recessive traits reappear in the second generation.

Information Booster:

• The genotypic ratio for the Law of Segregation is 1:2:1 (1 pure dominant : 2 hybrid : 1 pure recessive).
• 9:3:3:1 is the phenotypic ratio for Mendel's Law of Independent Assortment (dihybrid cross).

Additional Knowledge:

1:2:1 (Option d)

• While correct for genotype, the standard representation of the law's expression in offspring is usually the 3:1 phenotypic ratio.

So the correct answer is (b)