Females have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.emales have two copies of the X chromosome, while males have one X and one Y chromosome. The 22 autosomes are numbered by size. The other two chromosomes, X and Y, are the sex chromosomes. This picture of the human chromosomes lined up in pairs is called a karyotype.
In the book Carrots Love Tomatoes it says Don't plant tomatoes near corn because the tomato and corn earworm are identical..
Tomato plants have a tendency to become large and spindly, which can cause their stems to sprawl over the ground. Plants that touch the ground are more susceptible to pests, mold and disease and often don't get enough sunlight. You can train tomato vines to a trellis, which keeps your plants tidy and upright.tep 1. Buy or make a trellis with materials that last a long time and a simple design. Choose from wire tomato cages, wooden or bamboo stakes that form a teepee shape, or stakes and twine for a woven trellis.