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.
It then has another growing season in spring before summer heat forces it into dormancy. The optimum time for planting depends on when winter weather normally arrives in your area. Fescue grass will take as little as seven days to germinate, but it can take as many as 21 days for maximum germination.