Question

What is difference between chromosomes, DNA and genes?

Answer 1

A chromosome is a structure that is made of a chemical known as deoxyribonucleic acid, or DNA as well as protein. Chromosomes are found in the nucleus of cells. Chromosomes contain many genes. A gene is a molecular unit of heredity.Each gene codes for a polypeptide, which becomes a protein that performsa function in a living thing. The DNA molecules are very long and in order to fit inside the nucleus of a cell,they arehighly coiled and condensed. During sexualreproduction, one haploid set of chromosomes is given to the offspring from each parent, forming a diploid amount of chromosomes in the offspring. Since chromosomes contain all of our genes, an organism that reproduces sexually gets a combination of genes from both parents. Genes that are expressed produce an organism's phenotype.