A chromosome contains the cell's genetic material. That genetic material, which determines how an organism develops is a molecule of deoxyribonucleic acid .
hope it's help u
1 5 1
The major functions of chromosomes : 

1. They help in the knowing the genetic way that the off spring would be and even with the help of the chromosomes the reproduction process would take place.  

2. The chromosomes are found in the both plant and animal cells in the nucleus. the structure of the the chromosomes is that they would be in thread like shapes.