如今，树木图已成为科学家描绘生物群之间关系的有力工具。结果，围绕它们开发了具有自己的专业词汇的整个科学。在这里，我们将看到围绕进化树的科学，也称为系统发育学。系统发育学是构建和评估关于过去和现在生物体中进化关系和下降模式的假设的科学。系统发育学使科学家能够应用科学方法指导他们的进化研究，并帮助他们解释他们收集的证据。致力于解决几组生物的血统的科学家们评估了这些群体彼此之间相互关联的各种方式。这些评估从各种来源寻找证据，例如化石记录，DNA研究或形态学。因此，系统发育学为科学家提供了一种基于其进化关系对生物进行分类的方法。系统发育是一组生物的进化历史。系统发育是一种“家族史”，描述了一组生物经历的进化变化的时间序列。系统发育揭示并且基于这些生物之间的进化关系。通常使用称为分支图的图来描绘系统发育。分支图是树图，揭示了生物的谱系如何相互关联，它们如何在整个历史中分支和重新分支，并从祖先形式演变为更现代的形式。分支图描绘了祖先和后代之间的关系，并说明了沿着血统发展的特征的序列。分类图表面上类似于家谱研究中使用的家谱，但它们与家族树的区别在于一个基本方式：分支图不代表像家谱一样的个体，而是分支图代表整个谱系 – 杂交种群或有机体种。生物进化有四种基本机制。这些包括突变，迁移，遗传漂变和自然选择。生物进化有四种基本机制。这些包括突变，迁移，遗传漂变和自然选择。生物进化有四种基本机制。这些包括突变，迁移，遗传漂变和自然选择。这四种机制中的每一种都能够改变群体中基因的频率，因此，它们都能够通过修改来驱动下降。
Today, tree maps have become a powerful tool for scientists to depict the relationship between biota. As a result, the entire science with their own professional vocabulary was developed around them. Here we will see science around phylogenetic trees, also known as phylogeny. Phylogeny is the science of constructing and evaluating hypotheses about evolutionary relationships and decline patterns in past and present organisms. Phylogeny enables scientists to apply scientific methods to guide their evolutionary research and help them interpret the evidence they collect. Scientists working to solve the pedigree of several groups of organisms have evaluated the ways in which these groups are related to each other. These assessments look for evidence from a variety of sources, such as fossil records, DNA studies, or morphology. Therefore, phylogeny provides scientists with a way to classify organisms based on their evolutionary relationships. Phylogeny is the evolutionary history of a group of organisms. Phylogeny is a “family history” that describes the time series of evolutionary changes experienced by a group of organisms. Phylogeny reveals and is based on evolutionary relationships between these organisms. A graph called a branch map is often used to depict phylogeny. A branch diagram is a tree diagram that reveals how the lineages of living things are related to each other, how they branch and re-branche throughout history, and evolve from an ancestor form to a more modern form. The branch diagram depicts the relationship between ancestors and descendants and illustrates the sequence of features that develop along the lineage. The classification chart is similar to the genealogy used in genealogy research, but they differ from the family tree in a basic way: the branch diagram does not represent an individual like a genealogy, but the branch diagram represents the entire lineage – a hybrid or organism species. There are four basic mechanisms for biological evolution. These include mutations, migration, genetic drift and natural selection. There are four basic mechanisms for biological evolution. These include mutations, migration, genetic drift and natural selection. There are four basic mechanisms for biological evolution. These include mutations, migration, genetic drift and natural selection. Each of these four mechanisms is capable of changing the frequency of genes in a population, so they can all be driven to reduce by modification.