What is the significance of crossing-over during meiosis? A different combination of genes is provided to each gamete.
A different number of chromosomes are provided to each gamete.
C The number of chromosomes is reduced by half in each gamete.
D The number of genes is increased in each gamete.

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