Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. In fact, each species of plants and animals has a set number of chromosomes. A fruit fly, for example, has four pairs of chromosomes, while a rice plant has 12 and a dog, 39. Top of page.
The germination time for grass seed ranges from 5 to 30 days depending on the variety. It can be even longer than this in cooler temperatures. This is how long it will take to actually see the grass growing. Until this point, the seed, or the soil and mulch in contact with the seed, must stay moist.
Often times hydroseeded lawns will begin to germinate is as little as 7-14 days. Most grass types will take between 3-4 weeks to fill in and depending on how often the lawn is watered, and the type of grass seed used, it can take up to as much as 8 weeks to see strong growth. Don't forget to fertilize after 4 weeks.