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..
Good Companion Plants for Zucchini and Summer Squash Corn: Corn shares space well with zucchini and summer squash, since it grows vertically while the squash grow along the ground. The squash plants also help shade the soil to reduce the weeds that compete with the corn plants. Both corn and summer squash have the same moisture and soil fertility requirements, so they are very good neighbors. Beans: Pole beans, especially, work well planted near zucchini and other summer squashes.