Classify the planets as terrestrial planets or gas giants.

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

Give an example of a trait that is controlled by more than one gene.