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dna worksheet
Associate Program Material

DNA Worksheet

Answer the following in at least 100 words:

1. Describe the structure of DNA.
DNA is one of the nucleic acids information-containing molecules in the cell (ribonucleic acid, or RNA, is the other nuclei c acid). DNA if found in the nucleus of every human cell. The information is DNA: guides the cells (along with RNA) in making new proteins that determine all of our biological traits. DNA gets passed (copies) from one generation to the next. DNA in a cell is really just a pattern made up of four different parts called nucleotides. Image a set of blocks that has only four shapes, or an alphabet that has only four letters. DNA is a long string of these blocks or letters.

2. How does an organism’s genotype determine its phenotype?
The distinction between phenotype and genotype is fundamental to the understanding of heredity and development of organism. The genotype of an organism is the class to which that organism belongs as determined by the description of the actual physical material made up of DNA that was passed to the organisms by its parents at the organism’s conception. The phenotype of an organism is the class to which that organism belongs as determined by the description of the physical and behavioral characteristics of the organism. It is essential to distinguish the descriptors of the organism, its genotype and phenotype, from the material objects that are being described.

3. Describe each stage of the flow of information starting with DNA and ending with a trait.

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