Oldest Houses in the United States Richard Sparrow House. The Richard Sparrow House is an historic house at 42 Summer Street in Plymouth, Massachusetts and the oldest surviving house in Plymouth. The house was built around 1640 by Richard Sparrow, an English surveyor who arrived in Plymouth in 1636.
Fertilization: Sperm Penetrates Egg. It takes about 24 hours for a sperm cell to fertilize an egg. When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter.At the moment of fertilization, the baby's genetic makeup is complete, including whether it's a boy or girl.he sperm can live up to 48-72 hours. Only a few hundred will even come close to the egg, because of the many natural barriers that exist in a woman's body. It takes about 24 hours for a sperm cell to fertilize an egg. When the sperm penetrates the egg, the surface of the egg changes so that no other sperm can enter.
Posts: 2,282. Only a few hundred of the 250 million healthy sperm reach the egg. It takes about two hours to make the entire journey to the egg; however, some sperm are Olympic swimmers and can reach the egg in a half an hour.If no egg is available to fertilize, the sperm swim around patiently waiting to bump into one.osts: 2,282. Only a few hundred of the 250 million healthy sperm reach the egg. It takes about two hours to make the entire journey to the egg; however, some sperm are Olympic swimmers and can reach the egg in a half an hour. If no egg is available to fertilize, the sperm swim around patiently waiting to bump into one.