Crossing over involves the exchange of genetic information between

 I had the same definition as you above. It is a bit confusing to me. They say the exchange of information between homologous chromosomes. I ruled out sister chromatids cause it should say "non-sister", then sex chromosomes seems not to fit entirely, chromatids might but it is not specific ito "non-sister" which leaves me with homologues. Homologues seems to related closest to homologous chromosomes, but I am still uncertain

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.