The fertilized egg begins a rapid descent to the uterus. The period of rest in the tube appears to be necessary for full development of the fertilized egg and for the uterus to prepare to receive theegg. ... At the end of this transition period, the embryo becomes a mass of very organized cells, called a blastocyst.
Cohesive. This means that the water is attracted to other particles of itself, so they stick and bead up.
Molecular biotechnology is basically the study and alteration of nucleic acids and proteins in living organisms for various applications. It encompasses the different scientific fields of genetics, engineering, chemistry, microbiology, etc. Because of this, all of the given choices are methods of molecular biotechnology EXCEPT DNA profiling.