Which of the following statements is true?! Each DNA molecule contains a single gene DNA molecules are in the shape of a single strand mRNA molecules are in the shape of a double helix None of them If a double stranded DNA has 40% Thymine, the percentage of Guanine in the DNA Is... 10% 20% 80% 90% Which of the following is the correct cyclic form of mannose ? CHO HO-H HOH HOH CH OH D-Mannose a) b) c) HO OH OH OR OH OH HO HO OH OH OH A B D