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DNA & Chromosomes

DNA & Chromosomes. DNA Model. DNA can be compared to a ladder that is twisted into a continuous spiral shape known as a double helix Each step contains pairs of chemicals Adenine and Thymine pair together Guanine and Cytosine pair together

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DNA & Chromosomes

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  1. DNA & Chromosomes

  2. DNA Model • DNA can be compared to a ladder that is twisted into a continuous spiral shape known as a double helix • Each step contains pairs of chemicals • Adenine and Thymine pair together • Guanine and Cytosine pair together • http://learn.genetics.utah.edu/content/begin/traits/tour_chromosome.html

  3. Gene • A gene is thought to be a interrupted segment of DNA that contains coded instructions for specific traits. • Genes come in pairs and each possible version of a gene is called a allele

  4. Videos Heredity • http://learn.genetics.utah.edu/content/begin/traits/tour_heredity.html Traits • http://learn.genetics.utah.edu/content/begin/traits/tour_trait.html

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