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

deoxyribonucleic acid directs a mobile ph virtuoso 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 instalment of DNA that transmits information from p arent to offspring. When a cell prepares to divide, the DNA subatomic particle 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 open through a microscope only later they have condensed anterior to cell division. By this time, each chromosome has form a replica of itself. The devil copies of each are called chromatids. The deuce chromatids are given over by a protein disk at a purport called a centromere. Human cells have 23 contrastive chromosomes. Your carcass cells (also called somatic cells) make up devil copies of each chromosome, for a total of 46 chromosomes. The both copies of each chromosome are called homologous chromosomes, or homologues. Homologous chromosomes are similar in material body 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 lifespan bicycle of animals, including humans, gametes - eggs cells and sperm cells - are monoploid. A haploidic 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, the first cell of a new individual. existence haploid ensures that when an egg and a sperm fuse, the resulting zygote bequeath contain the characteristic diploid number of chromosomes for that organism. In around cases, humans who are missing even one chromosome do... I must commend you ccmustangs2001 on your valuable contributions to cheathouse.com Your notes are constantly informative, detailed, thorough and well written. hang on up the intelligent work. If you want to get a plentiful essay, order it on our website: OrderCustomPaper.com

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