If two genes were completely linked and no cross-over was observed, what would be the possible gametes that this individual can produce

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Which is the correct formula for photosynthesis