![]() The DNA sequence is called the genotype - this is the recipe - and the characteristics are called the phenotype - this is the cake!ĭNA is made of four biochemicals called nucleotide bases (or just "bases"). ![]() Genes are specific sequences of DNA that code for certain characteristics. Think about a gummy candy worm as the entire strand of DNA, but each colored segment is a different gene. This DNA is folded over and over into VERY small bundles - much too small for the human eye to see.ĭNA is organized into shorter segments called genes. Each nucleus contains 23 pairs (23 from your mom and 23 from your dad) of DNA, called chromosomes. ![]() Where in our bodies is DNA located? DNA is stored in the nucleus of each cell where it is best protected from damage. Even though our DNA is almost all the same, every single person (except for identical twins) has a unique DNA "recipe." Why is there a 0.01% difference? This small amount of DNA is what determines our physical differences such as eye color, hair color, height, etc. In humans, 99.99% of our DNA is exactly the same as every other person's. You can think of DNA as the "recipe" for living things - it provides the instructions for every part of the organism. DNA is the genetic material for all living things - this means that you, me, flowers, dogs, elephants and even viruses contain DNA. We have all heard about DNA, but what exactly is DNA and why is it important to us? DNA stands for deoxyribonucleic acid and is made up of billions of biochemicals. International Technology and Engineering Educators Association - TechnologyĭNA Build Identity Key (doc) Visit [ to print or download.Īn understanding that DNA is the genetic material for all living things. Some changes are beneficial, others harmful, and some neutral to the organism.Ĭomplex and microscopic structures and systems can be visualized, modeled, and used to describe how their function depends on the shapes, composition, and relationships among its parts, therefore complex natural structures/systems can be analyzed to determine how they function.Īlignment agreement: Thanks for your feedback! Models can be used to represent systems and their interactions. Though rare, mutations may result in changes to the structure and function of proteins. Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits.Īlignment agreement: Thanks for your feedback! In addition to variations that arise from sexual reproduction, genetic information can be altered because of mutations. Each distinct gene chiefly controls the production of specific proteins, which in turn affects the traits of the individual. Genes are located in the chromosomes of cells, with each chromosome pair containing two variants of each of many distinct genes. ![]() This activity focuses on the following Three Dimensional Learning aspects of NGSS:ĭevelop and use a model to describe phenomena.Īlignment agreement: Thanks for your feedback! Apply scientific ideas to construct an explanation for real-world phenomena, examples, or events.Īlignment agreement: Thanks for your feedback! Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism.Ĭlick to view other curriculum aligned to this Performance Expectation ![]()
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