Artifical and Natrual Selection and Evidence for Common Ancestry

Artifical selection vs. Natrual Selection\n\nOn the date of 5/11, the distinction between selection types was documented. Artifical selection is described as a process involving Humans, where they Choose traits. Significant examples of this include the breeding of Dog, live stock, and Plants. Conversely, the transcript defines Natrual selection as a process where the enviroment determined which traits are favored. This natural process is accompanied in the notes by a visual sequence of triangular symbols: $\Delta \Delta \Delta \Delta \Delta \Delta \Delta$. \n\n# Evidence for a Common Ancestor\n\nEric Vang provided an exhaustive look at the question: "What evidence do we have?" in regards to a Common Ancestor. Four distinct points of evidence are listed, accompanied by markings of A and D. The first point is Fossils, which are defined as the Preserved evidence of an organism (life) that used to exist a Past geological age. The second piece of evidence is Eukaryotic DNA. The notes state that All living Organisms use the same 4 DNA Nucleotides, which are $A$, $T$, $C$, and $G$, a fact that is used for showing common ancestry.\n\n# Homeobox Genes (Hox) and Embryonic Development\n\nThe third category of evidence is Homeobox Genes, also referred to as Hox. These Hox genes are responsible for regulating an organism bedy Plan, a biological process that results in making them appear diffrent. The fourth category of evidence is Embryonic Development. It is noted that Many vertebrate embroys shared similar early developmental features. This similarity in early stages is used as evidence Suggesting Common Ancestry.\n\n# Biological Classification and Anatomy\n\nThe transcript concludes with specific anatomical definitions for organisms to distinguish between common types. A Vertebrate is defined as an Organism with an Back bone. In contrast, an Invertebrate is described as an organism with out a Backbone. These definitions help clarify the differences mentioned in the discussion of vertebrate embroys and their developmental features found in the evidence for common ancestry.