Why is it that bacterial ribosomes can begin translation before mrna synthesis is completed, but eukaryotic ribosomes cannot?

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

In a relatively small iguana population the allelic frequency is tracked for three generations. webbing is a recessive allele; no webbing is the dominant allele. during one very rainy spring and summer, a flood washes all the iguana without webbed feet out to sea. by the fall, and three generations later, you have the gene pool seen here.

In the water cycle , when does water undergo a chemical change