If the parent genotypes are aa and aa, the offspring are expected to be 1/2 aa and 1/2 aa all aa 1/4 aa, 1/2 aa, 1/4 aa 3/4 aa and 1/4 aa

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.