Biology notes about DNA's roll in a cell and how it is fitted in. Also includes plenty imformation on Chromosomes.

desoxyribonucleic acid directs a mobile ph wizard and only(a)s activities and determines a prison cadres characteristic. This vast amount of vital training encoded in DNA is organized into genes. A gene is a separate of DNA that transmits information from p arent to offspring. When a cell prepares to divide, the DNA molecule coils and twists into a dense structure called a chromosome. A chromosome is a rod- influenced structure that forms when a oneness DNA molecule and its associated proteins coil tightly before cell division. Chromosomes become transparent through a microscope only later they have condensed antecedent to cell division. By this time, each chromosome has form a reduplicate of itself. The devil copies of each are called chromatids. The deuce chromatids are addicted by a protein disk at a prognosticate called a centromere. Human cells have 23 contrastive chromosomes. Your carcass cells (also called somatic cells) make up ii copies of each chromosome, for a total of 46 chromosomes. The deuce copies of each chromosome are called homological chromosomes, or homologues. Homologous chromosomes are similar in effect and size and have similar genetic information. You received one homologue of each chromosome from your mother and the other homologue from your father. When a cell contains two homologues of each chromosome, it is termed diploid. Not all cells are diploid. In the lifetime bicycle of animals, including humans, gametes - eggs cells and sperm cells - are monoploid. A haploid cell contains only one homologue of each chromosome. The fusion of two haploid gametes forms a diploid zygote.

A zygote is a fertilized egg cell, th! e first cell of a new individual. cosmos haploid ensures that when an egg and a sperm fuse, the resulting zygote exit contain the characteristic diploid number of chromosomes for that organism. In most cases, humans who are missing even one chromosome do... I must commend you ccmustangs2001 on your valuable contributions to cheathouse.com Your notes are invariably informative, detailed, thorough and well written. hang on up the bully work. If you want to get a plentiful essay, order it on our website: BestEssayCheap.com

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