You are here. The Planets in Natural Colors. Several teachers and students have asked what the planets look like in true or natural colors. They've noticed that each planet's appearance can vary greatly in photographs, and that many of the photographs are labeled as a false-color view. Many times scientists enhance the colors, or contrast of an image to draw out more detail.
Human cells contain 23 pairs of chromosomes. Most of an organism's chromosomesâgenerally all except for one pairâare called autosomes, which are the same in males and females. Humans have 22 pairs of autosomes. Many organisms also have a pair of sex chromosomes, which differ between males and females. In humans, a female has two identical sex chromosomes. A male has one sex chromosome that is like those of females, and one that is smaller and differently shaped.
The human genome is composed of 3 billion base pairs of DNA, which is 1 m in length. Genomic DNA is distributed into 23 distinct chromosomes: 22 autosomes and one of two types of sex chromosomes (X or Y) in a haploid germ line cell.nalyses of the Human Genome Project revealed that the human genome contains about 22,000 genes. These genes occupy only 5% of the genome, and the remaining 95% is related to the function, behavior, and inheritance of the chromosomes. Further analyses are needed to better understand chromosomes as vehicles for genes.