Question on: JAMB Biology - 2024
Use the diagram above to answer the question that follows
What is the genotypic ratio of the offspring produced in F1 generation?
A
2:1:1
B
1:2:1
C
2:2
D
3:1
Ask EduPadi AI for a detailed answer
Correct Option: B
The question is incomplete because the diagram is missing. However, based on the question, it is asking about the genotypic ratio of the F1 generation, which is the first generation of offspring. The most common example used to calculate the genotypic ratio in the F1 generation is from a monohybrid cross (a cross between two organisms with different alleles for a single gene).
- Monohybrid Cross: If we assume a monohybrid cross involving a dominant and recessive allele (e.g., T for tall and t for short), and the parents are heterozygous (Tt x Tt), the genotypic ratio will be 1:2:1.
- Punnett Square: A Punnett square would be used to determine the offspring's genotypes.
- TT (1)
- Tt (2)
- tt (1)
- Ratio: Therefore, the genotypic ratio is 1 (TT):2 (Tt):1 (tt).
Add your answer
Please share this, thanks!
No responses