During which phase of mitosis do the nuclear membrane, nucleoli, nucleus dissolve

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

Why do german shepherds shed so much

What happens when the cell copies its chromosomes