Biology / Bio 1035 · Atom · ~20 seconds
The Punnett Square
Video not yet published
to the StudyWalks catalog
to the StudyWalks catalog
State
A Punnett square is a grid crossing one parent's possible gametes against the other's, showing every offspring genotype and its expected frequency.
Show
A 2-by-2 Punnett square for a Yy-by-Yy cross shows one YY, two Yy, and one yy square, a 1:2:1 genotype ratio.
Watch for
A Punnett square shows the population-level expected ratio — it does not predict any one individual offspring's actual genotype.