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Genetics Quiz Question Bank

Based on Chargaff's observation, if a sample of DNA contains 23% Guanine, what is the % of Thymine in the DNA sample?
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Based on Chargaff's observation, if a sample of DNA contains 23% Guanine, what is the % of Thymine in the DNA sample?
27%
Chris starts dating and plans to marry Jenny. Chris' blood genotype is AS (ie. he has an allele for hemoglobin A and Hemoglobin S), while Jenny has sickle cell disease (SCD) because her blood genotype is SS.
a. What is the probability that their kids will have SCD?
b. What is the probability that their kids will have SCD, if Jenny's blood genotype has been AA?
(Hint: Note hemoglobin S is sickled hemoglobin and SCD is an autosomal recessive disorder)
50% and 0%
Consider the structure of DNA-The bond linking the 3'OH of one sugar to the 5'-PO4^2 of another sugar on the same DNA strand is known as _______________ while the bond that links the bases on one DNA strand with bases on the other strand of the double helix is known as a ___________________.
Phosphodiester bond and hydrogen bond, respectively
For any DNA molecule, the percentage of dsDNA present in the smaple at temperatures lower than Tm will be:
>50%
The addition of phosphate group(s) to a nucleoside makes it a:
Nucleotide