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KUPSHO STUDY GUIDE: SCIENCE EXAM: THE DNA CONNECTION DNA is _______ stranded and referred to as a “twisted ladder” a. single b. double c. triple In DNA the base A (adenine) forms a bond with the base____. In RNA the base A (adenine) forms a bond with the base ____. In DNA the base C (Cytosine) forms a bond with the base ____. In DNA the bases A and T are held together by a ___ bond. a. single b. double c. triple In DNA the bases G (Guanine) and C (Cytosine) are held together by a ___ bond. d. single e. double f. triple The process where RNA copies the code from DNA in the nucleus is referred to as __________________________. The process where tRNA “decodes” the bases by “cracking the code” on a ribosome to make an amino acid is referred to as _________________________. DNA reads TAT therefore RNA will copy the code as __________. DNA reads ATGCCTTAG therefore RNA will copy the code as ______________________ Use the codon chart to determine the Amino acids that will be made from your RNA strand. ____/_____/_____ Using the codon chart there is ___ codes for (Ser). Using the codon chart, the RNA code GAC codes for the amino acid _____. Suppose a person has a substitution in their DNA code. Their code reads TAC, the normal gene reads TAG (this person does not have diabetes). Will the substitution cause this person to be diabetic? (Hint: You need to use the codon chart to answer this question). a. Yes b. No Define: Dominant, Recessive, Purebred, Hybrid, Heterozygous, Homozygous Transcription / Translation Suppose that a person eats a total of 2,200 calories in one day. Of those calories, 950 come from carbohydrates, 400 from fat and the rest protein. Calculate the percentage of calories that come from proteins. A women is a carrier for a disease, she marries a normal male. They have 3 kids. Two sons and one daughter. One of the sons is a carrier, the other son has the disease. The daughter is normal. Construct a pedigree chart. In rabbits grey fur is dominant over white. Make a punnett square crossing a purebred grey rabbit to a hybrid rabbit. What percentage of the rabbits are white? Vitamin Function Maintains bones and teeth and helps in the use of calcium and phosphorus (get this from the sun!) Aids in blood clotting Maintains Red Blood Cells Aids vision in dim light