How did watson and crick determine base pairing?
a.)they analyzed the work of phoebus levene.
b.)they used chargaff's rule to fit the bases together.
c.)they broke the hydrogen bond.
d.)they observed the pairing under a microscope.

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

answer; hydrologic cycle;