Introduction
The theory of evolution is one of the most significant scientific discoveries of all time. It explains how living things change over time and adapt to their environment. One of the most compelling pieces of evidence for evolution is the study of biochemistry. In this article, we will explore the biochemical evidence for evolution lab 12 answer key.
What is Biochemistry?
Biochemistry is the study of chemical processes within and relating to living organisms. It involves the analysis of biological molecules such as proteins, nucleic acids, carbohydrates, and lipids. These molecules are essential for the functioning of cells and the growth and development of organisms.
How Does Biochemistry Support Evolution?
Biochemistry provides compelling evidence for evolution by showing that all living organisms share a common ancestry. The study of DNA, RNA, and proteins has revealed that all living things use the same genetic code. This code is made up of four nucleotide bases, which are the building blocks of DNA and RNA.
Comparing DNA Sequences
By comparing the DNA sequences of different organisms, scientists can determine how closely related they are. For example, humans and chimpanzees share over 98% of their DNA sequence. This suggests that we share a common ancestor and have evolved from a common lineage.
Comparing Protein Structures
Proteins are essential for the functioning of cells and provide another piece of evidence for evolution. The structure of proteins is determined by the sequence of amino acids that make them up. By comparing the amino acid sequences of different proteins, scientists can determine how closely related they are.
What Did Lab 12 Entail?
Lab 12 is a biochemical evidence for evolution lab that explores how DNA and protein sequences can be used to construct phylogenetic trees. In this lab, students analyze DNA sequences and compare them to construct a phylogenetic tree that shows the evolutionary relationships between different organisms.
Conclusion
In conclusion, the study of biochemistry provides compelling evidence for evolution. By analyzing DNA and protein sequences, scientists can determine the evolutionary relationships between different organisms. Lab 12 is an excellent example of how biochemical evidence can be used to support the theory of evolution.