When light energy excites electrons in photosystem ii, where do the electrons to replace them come from?

German cockroaches, bulging eyes, bu, are recessive to normal eyes, bu , and curved wings, cv, are recessive to straight wings, cv . both traits are encoded by autosomal genes that are linked. a cockroach has genotype bu bu cv cv, and the genes are in repulsion. which set of genes will be found in the most common gametes produced by this cockroach?

Isolated volcanic peaks on the ocean floor are

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone