dna & chromosomes. dna model dna can be compared to a ladder that is twisted into a continuous...
TRANSCRIPT
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
• http://learn.genetics.utah.edu/content/begin/traits/tour_chromosome.html
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
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