In pea plants, yellow seed colour (Y) is dominant over green (y). Round shape (R) is dominant over wrinkled (r). You cross a dihybrid parent YyRr × YyRr.
Formula Sheet
9:3:3:1 dihybrid ratioP(A and B) = P(A) × P(B)Phenotype ratio for monohybrid: 3:1In a YyRr × YyRr cross, what fraction of offspring will be Yellow AND Round?
How many of the 16 offspring boxes will show the genotype YYRR (homozygous dominant for both)?
What is the expected ratio of Green Wrinkled (yyRr or yyrr) offspring?
Two heterozygous Tt parents cross (tall T dominant). What percentage of offspring are expected to be SHORT (tt)?