Roof rats are the worst rodent pest in the state of Florida and most abundant. The Norway rat (Rattus norvegicus) that is familiar to most people is rare in Florida. Roof rats consume and destroy stored animal and human food, attack fruit crops, and take up residence in attics, soffits, hollow walls, and out-buildings.
1 The sperm brings in another 23 chromosomes to complement the 23 held in the egg to get to a total of 46 chromosomes - what all of us normal people have.  We know from in vitro fertilization studies that the egg is only capable of being fertilized for about 24 hours after ovulation.
Once the ovum is thus released, it is available to a mature sperm for fertilization for 12 to 48 hours before it begins to disintegrate. This is the most fertile period of your cycle and during ovulation your chances of conception are highest.onsidering the fact that the ovum starts to disintegrate 12 to 48 hours, there is a possibility that your partnerâs sperm can fertilize the egg up to two days after you ovulate.