生物进化被定义为经过修改的下降。具有修饰的下降是指将来自亲本生物的性状传递给它们的后代。这种特征的传递被称为遗传，遗传的基本单位是基因。基因保存有关生物体的每个可想象的方面的信息：生长，发育，行为，外观，生理，繁殖。基因是生物体的蓝图，这些蓝图每一代都从父母传给后代。基因的传递并不总是准确的，蓝图的某些部分可能被错误地复制，或者在经历有性生殖的生物的情况下，一个父母的基因与另一个亲本生物的基因组合。更适合他们环境的个体可能会将他们的基因传递给下一代，而不是那些不适合其环境的个体。由于这个原因，存在于生物群体中的基因由于各种力 – 自然选择，突变，遗传漂移，迁移而不断变化。随着时间的推移，人口中的基因频率发生变化 – 进化发生。有三个基本概念通常有助于阐明修改下降的方式。这些概念是：因此，发生变化的程度不同，基因水平，个体水平和人口水平。重要的是要了解基因和个体不进化，只有种群进化。但是基因发生突变，这些突变通常会对个体产生影响。选择具有不同基因的个体，支持或反对，结果，群体随时间变化，它们发展。达尔文的一棵树的形象坚持不懈地设想从现有形式中萌芽新物种。达尔文的一棵树的形象坚持不懈地设想从现有形式中萌芽新物种。 “随着芽的增长，新芽增长”〜查尔斯达尔文1837年，查尔斯达尔文在他的一本笔记本中勾勒出一张简单的树形图，旁边写着试探性词语：我想。从那时起，达尔文的一棵树的形象坚持不懈地设想从现有形式中萌芽新物种。他后来在“物种的起源”一书中写道：“由于芽增长到新芽，这些，如果有活力，在各方面分支出来并超过许多一个较弱的分支，所以一代人我相信它一直伴随着伟大的生命之树，它的死亡和破碎的树枝充满了地壳，并以其不断分枝和美丽的分枝覆盖在表面上。
英国巴斯大学生物论文代写：起源树形图
Biological evolution is defined as a modified decline. A decline with a modification refers to the transfer of traits from the parental organism to their offspring. The transmission of this feature is called inheritance, and the basic unit of inheritance is the gene. Genes preserve information about every imaginable aspect of an organism: growth, development, behavior, appearance, physiology, reproduction. Genes are blueprints of organisms, and each generation of these blueprints is passed from parent to offspring. Gene delivery is not always accurate, some parts of the blueprint may be copied incorrectly, or in the case of a sexually reproducing organism, a parent’s gene is combined with another parent’s gene. Individuals more suited to their environment may pass their genes to the next generation, rather than those who are not suitable for their environment. For this reason, genes present in biological populations are constantly changing due to various forces – natural selection, mutation, genetic drift, and migration. Over time, the frequency of genes in the population changes – evolution takes place. There are three basic concepts that often help to clarify how the changes are reduced. These concepts are: therefore, the extent of the change, the genetic level, the individual level and the population level. It is important to understand that genes and individuals do not evolve, only populations evolve. But genes are mutated, and these mutations usually affect individuals. Individuals with different genes are selected, supported or opposed, and as a result, groups change over time and they develop. The image of a tree in Darwin persistently envisions sprouting new species from existing forms. The image of a tree in Darwin persistently envisions sprouting new species from existing forms. “As the buds grow, the sprouts grow” ~ Charles Darwin In 1837, Charles Darwin sketched a simple tree in his notebook with a tentative phrase next to it: I think. Since then, the image of a tree in Darwin has consistently envisioned sprouting new species from existing forms. He later wrote in the book “The Origin of Species”: “Because buds grow to sprouts, these, if energetic, branch out in all respects and outweigh many weaker branches, so I believe it has been with a generation. The great tree of life, its dead and broken branches are filled with the earth’s crust, and covered with its constant branches and beautiful branches.” ~Charlie Darwin, from the fourth chapter. Natural selection about the origin of species