I have an existing driveway that is eight years old. Its dimensions are 30-by-60 feet. I just have a binder coat on the driveway. I also have some low spots that are 1 to 2 inches where the concrete garage floor meets the driveway. The driveway is sealed every two years with Jet Black seal coat. The driveway is in good condition overall with some minor cracks.
Two scientists, James Watson and Francis Crick, worked out the structure of DNA. By using data from other scientists they were able to build a model of DNA. The data they used showed that bases occurred in pairs.
James Watson and Francis Crick proposed a structure for the DNA molecule that suggested the basic mechanism of DNA replication. The model proposes that DNA is composed of two strands of DNA running anti-parallel (remember the 5' and 3' ends!!) to each other.ames Watson and Francis Crick proposed a structure for the DNA molecule that suggested the basic mechanism of DNA replication. The model proposes that DNA is composed of two strands of DNA running anti-parallel (remember the 5' and 3' ends!!) to each other.