Biology
Grade-8
Easy
Question
What is the genotype ratio of the given Punnett diagram?
- 1:2:4:2:4:1:2:1:1
- 1:2:2:4:1:2:1:2:1
- 1:3:3:4:1:2:1:3:1
- 1:2:2:4:2:2:1:2:1
Hint:
The genotype depends upon the similarity and difference between the two alleles that make up a gene.
The correct answer is: 1:2:2:4:1:2:1:2:1
- Genotype is the genetic make up of the organism
- Gene is the unit of heredity
- A gene is made up of two alleles
- The two alleles can be same (homozygous) or different (heterozygous)
- The given genotypes are 1AABB, 2AABb, 2AaBB, 4AaBb, 1AAbb, 2Aabb, 1aaBB, 2aaBb and 2aabb for the offspring
- Hence, the genotype ratio is 1:2:2:4:1:2:1:2:1
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