Why did the F 1 offspring of Mendel's classic pea cross always look like one of the two parental varieties

In what part of a chloroplast does glucose production occur? a. atp synthase b. photosystem ii c. photosystem d. stroma

Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.