Anyone know this answer?

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

The function of the excretory system is to control homeostasis and

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes