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..
Planted in soil that is too cool, corn seeds will just rot in the ground. In the case of transplants, if the soil is still too cool, the plants will go into shock and may never recover. Keeping the soil warm can also help hot-weather vegetables, such as tomatoes, squash and melons.One of the best ways to pre-warm your soil in the spring is with plastic, either clear or black. Research has shown that clear plastic will warm the soil faster.lanted in soil that is too cool, corn seeds will just rot in the ground. In the case of transplants, if the soil is still too cool, the plants will go into shock and may never recover. Keeping the soil warm can also help hot-weather vegetables, such as tomatoes, squash and melons.