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 healthy sperm has reached an egg then fertilization can immediately occur. It usually roughly takes 90 seconds for the sperm to reach the egg and can be found in the fallopian tubes within five minutes.fter fertilization occurs, implantation begins to occur as the egg travels through the fallopian tubes to the uterus where the zygote will begin to form and grow into a baby. This process can take up to four days to complete and reach itâs expected point.