Dna Worksheet
DNA Worksheet
Trisha McCabe
SCI/230
May 8th 20132
Chandreyi Basu, PhD
Associate Program Material
DNA Worksheet
Answer the following in at least 100 words:
1. Describe the structure of DNA.
DNA made up of units called nucleotides, nucleotides are made up of three molecules components, a nitrogen base, a sugar, and a phosphate (Simon, Reece, Dickey, 2010). The nucleotides are joined together by bonds between the sugar of one nucleotide and the phosphate of the next producing a long chain of nucleotides resulting in a sugar-phosphate backbone (Simon, Reece, Dickey, 2010) the base containing nitrogen is the only part that is variable represented by, A Adenine, C cytosine, G guanine, and T Thymine. The sugars and phosphates form the backbone of the molecule and are on the outside. The bases point inwards horizontally. The antipoarallel strands run in opposite directions and are held together by hydrogen bonds between the base pairs, these two long strands twisted and wrap around each other to form a double helix. Hydrogen bonds between bases hold the strands together; each base pairs with a complementary partner: A with T, and G with C (Simon, Reece, Dickey, 2010).
2. How does an organism’s genotype determine its phenotype?
The genotype is the genetic makeup of a cell, an organism, or an individual, Where as a Phenotype is the composite of an organism 's characteristics or traits: such as its morphology, development, biochemical or physiological properties, phrenology, behavior, and products of behavior (Simon, Reece, Dickey, 2010 an organism 's phenotype is a physical description of a certain trait that organism carries. An organism 's genotype depends on which genes that organism inherits from its parents whether it is homozygous dominant gene (AA), homozygous recessive gene (aa), or heterozygous gene (Aa). 3. Describe each stage of the flow of information starting with DNA and ending with a trait.
DNA and
Trisha McCabe
SCI/230
May 8th 20132
Chandreyi Basu, PhD
Associate Program Material
DNA Worksheet
Answer the following in at least 100 words:
1. Describe the structure of DNA.
DNA made up of units called nucleotides, nucleotides are made up of three molecules components, a nitrogen base, a sugar, and a phosphate (Simon, Reece, Dickey, 2010). The nucleotides are joined together by bonds between the sugar of one nucleotide and the phosphate of the next producing a long chain of nucleotides resulting in a sugar-phosphate backbone (Simon, Reece, Dickey, 2010) the base containing nitrogen is the only part that is variable represented by, A Adenine, C cytosine, G guanine, and T Thymine. The sugars and phosphates form the backbone of the molecule and are on the outside. The bases point inwards horizontally. The antipoarallel strands run in opposite directions and are held together by hydrogen bonds between the base pairs, these two long strands twisted and wrap around each other to form a double helix. Hydrogen bonds between bases hold the strands together; each base pairs with a complementary partner: A with T, and G with C (Simon, Reece, Dickey, 2010).
2. How does an organism’s genotype determine its phenotype?
The genotype is the genetic makeup of a cell, an organism, or an individual, Where as a Phenotype is the composite of an organism 's characteristics or traits: such as its morphology, development, biochemical or physiological properties, phrenology, behavior, and products of behavior (Simon, Reece, Dickey, 2010 an organism 's phenotype is a physical description of a certain trait that organism carries. An organism 's genotype depends on which genes that organism inherits from its parents whether it is homozygous dominant gene (AA), homozygous recessive gene (aa), or heterozygous gene (Aa). 3. Describe each stage of the flow of information starting with DNA and ending with a trait.
DNA and
References: • Simon, E. J., Reece, J. B., & Dickey, J. L. (2010). Campbell essential biology with physiology (3rd Ed.). San Francisco, CA: Pearson Benjamin Cummings.