How is a final mrna that lacks introns produced in eukaryotic cells?

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

(amoeba sisters video recap: pedigrees and need

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