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..
Corn Planting Areas in Texas. 1  Area 1(March â mid April). 2  East Texas. 3  Area 2 (late February â March). 4  Upper Gulf Coast. 5  Area 3 (February â mid March). 6  South Texas. 7  Area 4 (mid April â mid May). 8  Texas Panhandle. 9  Area 5. 10  Central Texas. 11  Area 6. 12  West Texas.