Question
Question: In a certain plant, yellow fruit colour (Y) is dominant to green (y) and round shape (R) is dominant...
In a certain plant, yellow fruit colour (Y) is dominant to green (y) and round shape (R) is dominant to oval (r). The two genes involved are located on different chromosomes.
Where of the above will result when plant YyRr is backcrossed (testcrossed) with the double recessive parent?
A
9:3:3:1 ratio of phenotypes only
B
9:3:3:1 ratio of genotypes only
C
1:1:1:1 ratio of phenotypes only
D
1:1:1:1 ratio of phenotypes and genotypes
Answer
1:1:1:1 ratio of phenotypes and genotypes