Pick a stage of life or "family unit" Pick a challenge that typically occurs at that time in life, or in a family unit, include explanation and detail.

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

The body is protected against harmful flu viruses by

What is the phylum of soft bodied animals with a true bosy cavity and a three part body consisting of a foot visceral mass and a mantle