please help quickly! very easy question, i just want to check my answer! Y = yellow leaves y = green leaves S = smooth seeds s = rough seeds A plant has YySs. What posssible gametes can the plant produce?

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

Using meiosis, the sporophyte produces spores that are .

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.