The f1 generation differed from the f2 in mendel's experiments in that

All of the f2 generation were genotypically heterozygous for the dominant and recessive gene while phenotypically the same. the f1 generation mixed homozygous dominant with homozygous recessive resulting in the f2 generation all being the same

Dna transcription:
after the transcription of mrna from dna the mrna needs to exit the nucleus and enter the cytoplasm where it will be translated to form protein. the transcribed mrna exits the nuclear membrane via nuclear pores interspersed through out the membrane.
synthesis of proteins:
after the mrna exits the nucleus via the nuclear pores in the nuclear membrane it undergoes the process of translation.  a lot of the ribosomes responsible for the process of protein synthesis are membrane bound on the rough endoplasmic reticulum where the protein undergoes post translational modifications and additions