When doing a dihybrid cross you’re supposed to skip the allele of the same trait, so is this how you would create a cross to find out what the possible gametes phenotype will consist of if both parents genotype is ‘SsYs’

yes check this

Explanation:

this is for RRYY*RRYY

RrYy

for f1 generation then for punnett-square or dihybrid cross is what's above

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully