A tetrahybrid cross is made between pea plants of genotypes…

A tetrahybrid cross is made between pea plants of genotypes AABBccdd and aabbCCDD. (Note that dominant alleles are represented by capital letters, recessive alleles by lower case letters, and the genes are unlinked.) The F1 plants were allowed to self-pollinate. What proportion of the F2 plants would be expected to express all four dominant traits?