Dna will move through the gel along the electric current, its direction depending in part of the molecule's charge. in which direction, positive to negative or vice versa, will dna movce in the electric field? why?

Negative to positive electrode

Since DNA is a negatively charged macromolecule.

Explanation:

DNA is a polymer of nucleotide each of which has a phosphate residue, a pentose sugar, and a nitrogenous base. The presence of phosphate residue in the DNA backbone imparts the whole DNA molecule a negative charge.

Since DNA is negatively charged, various DNA fragments are loaded at the negative terminal during the gel electrophoresis to allow their movement towards the positive electrode present at the other extreme end.  

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."