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..
Extreme temperatures cause tomato plants and fruit to suffer damage. Tomatoes (Lycopersicon esculentum) grow well in U.S. Department of Agriculture plant hardiness zones 2 through 10 when planted in the full sun.This fruit is commonly categorized as a vegetable.The sizes of the tomatoes vary from tiny, grape-sized fruit to large beefsteak tomatoes. The plant itself is a bushy vine that needs support in order to grow upright. When temperatures fall too low or soar too high, the tomato plants and fruits suffer.emperatures below 55 degrees Fahrenheit are too low to grow a healthy tomato plant. The low temperatures interfere with normal pollination of the blossoms, which drop off the plants. Fruit fails to set, so no tomatoes are produced.