Genes are individual segments of DNA and chromosomes are structures which contain many genes packed together. Each chromosome contains one DNA molecule and each DNA molecule contains several genes or individual strands.Know More
Genes are the basic unit in the study of genetics. Each gene contains the specific code relating to the function of a single protein. Genes combine to form specific DNA molecules. The nucleus of the cell of an organism contains chromatin, which is complex combination of proteins and DNA. When cell division occurs during reproduction, the chromatin forms with the DNA into a chromosome.
In a chromosome, the DNA is tightly packed together with histone proteins. If all the DNA strands in the human body were laid end to end, they would form a very thin strand about 6 billion miles long. The complexity of the organism usually predicts the number of genes and chromosomes. A frog, for example, has 26 chromosomes, or 13 pairs, while a human being has 46 chromosomes, or 23 pairs. Human chromosomes range from 300 genes to 8,000 genes in size.
Chromosomes are paired as the offspring receives one from each parent. Chromosomes and sometimes their combination in the pair determine all inherited characteristics, including sex. For instance, two X chromosomes will produce a female baby while an XY combination will produce a male baby.Learn more about Molecular Biology & DNA
The simplest way to describe chromosome structure is as an X-shaped microscopic bit of genetic information that's part of DNA. However, this is not the only way that chromosomes can be structured, and new research that came out in 2013 calls the popularly accepted X-shape structure into question.Full Answer >
Chromosomes are composed of deoxyribonucleic acid strands made of gene combinations. All DNA strands consist of nucleotides, composed of a nitrogenous base, a molecule of sugar and a molecule of phosphoric acid. Specific combinations of the nitrogenous bases are gene codes that present as hereditary characteristics.Full Answer >
Chromosomes come from an individual's parents. The 46 chromosomes that a person has come in pairs, half from the mother and half from the father.Full Answer >
Chromosomes assist in the process of cell division by distributing DNA. They act as a container to hold in the DNA molecules.Full Answer >