Editing Monohybrid cross (section)

===Second cross===

[[Gregor Mendel|Mendel]] then allowed his hybrid peas to self-pollinate. The wrinkled trait—which did not appear in his hybrid generation—reappeared in 25% of the new crop of peas.

Random union of equal numbers of R and r gametes produced an F2 generation with 25% RR and 50% Rr—both with the round phenotype—and 25% rr with the wrinkled phenotype.
{| class="wikitable" style="text-align: center; "
! {{diagonal split header|<br />F1 gametes|F1 gametes}}
! R || r
|-
! R
| RR || Rr
|-
! r
| Rr || rr
|}