人的基因组成

基因

基因（Gene,Mendelian factor）是指携带有遗传信息的DNA或RNA序列，也称为遗传因子，是控制性状的基本遗传单位。基因通过指导蛋白质的合成来表达自己所携带的遗传信息，从而控制生物个体的性状表现。

【英文简述】

A gene is a set of segments of nucleic acid that contains the information necessary to produce a functional RNA product in a controlled manner. They contain regulatory regions dictating under what conditions this product is made, transcribed regions dictating the sequence of the RNA product, and/or other functional sequence regions. The physical development and phenotype of organisms can be thought of as a product of genes interacting with each other and with the environment，and genes can be considered as units of inheritance.

通俗点，基因是染色体上的一小段，也是由DNA组成
DNA呢，就是两条脱氧核苷酸链向楼梯一样合在一起的东西