What is the expected phenotypic ratio in the F2 generation of a monohybrid cross?
Practice Questions
1 question
Q1
What is the expected phenotypic ratio in the F2 generation of a monohybrid cross?
3:1
1:2:1
9:3:3:1
1:1
In a monohybrid cross, the expected phenotypic ratio in the F2 generation is 3:1, where three offspring display the dominant trait and one displays the recessive trait.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the expected phenotypic ratio in the F2 generation of a monohybrid cross?
Solution: In a monohybrid cross, the expected phenotypic ratio in the F2 generation is 3:1, where three offspring display the dominant trait and one displays the recessive trait.
Steps: 6
Step 1: Understand what a monohybrid cross is. It involves crossing two organisms that differ in one trait.
Step 2: Identify the dominant and recessive traits. The dominant trait is the one that appears in the offspring, while the recessive trait does not.
Step 3: In the F1 generation (first generation), all offspring will show the dominant trait because they inherit one dominant allele from each parent.
Step 4: When the F1 generation is crossed with itself, it produces the F2 generation (second generation).
Step 5: In the F2 generation, the offspring will show a mix of the dominant and recessive traits.
Step 6: The expected ratio of offspring showing the dominant trait to those showing the recessive trait is 3:1.
