User talk:Personinflorida

--UTRSBot (talk) 23:53, 4 April 2018 (UTC)

sample of genes that i want to upload.
A gene is a segment of a chromosome which contains the code for a particular characteristic, for example eye color or blood-group. A chromosome is a chain of thousands of genes. The 46 chromosomes in the nucleus of each body cell contains the coded instructions for the growth and development of a complete human being. The instructions are coded in DNA(deoxyribonucleic acid), The chemical substance of which genes are made. Genes are switched on and off. Although each cell possesses all a person's genes, it will only be active in the cells of the iris. Genes function at the precise moment when they are needed, and then stop, but how a gene is switched on and off is not known. STRUCTURE OF DNA. Each chromosome consists of a long, thin, thread of DNA surrounded by a protein coat. The thread is highly coiled. When it is uncoiled, DNA is like a twisted ladder.

-The sides of the ladder are formed from alternate sugar and phosphate molecules. -The rungs of the ladder are formed from pairs of nucleotides. There are four nucleotides and they always pair up so that adenine is with thymine and that the cytosine is with guanine. The segment of DNA which makes the gene consists of thousands of base pairs and each gene is a code for making one kind of protein. The order in which the base pairs are arranged governs; the order in which the amino acids are arranged to form a protein molecule.