Question
Watson and Crick's double-helical model was proposed
based onSolution
Watson and Crick's double-helical model of DNA was proposed based on both: (A) Chargaff's chemical analysis of DNA, which showed that the amount of adenine (A) is equal to the amount of thymine (T) and the amount of guanine (G) is equal to the amount of cytosine (C) in DNA. This observation led to the idea of complementary base pairing in the DNA molecule. (B) Wilkins and Franklin's X-ray diffraction data, which provided insights into the structure of DNA, particularly its helical nature and dimensions. This data helped confirm and refine the double-helical model proposed by Watson and Crick.
Two numbers are in the ratio 5:12, and their least common multiple (LCM) is 1,440. Determine the sum of these two numbers.
The product of two numbers is 132 and their highest common factor is 6. What is the least common multiple of these numbers?
The HCF and LCM of the two numbers are 225 and 306 respectively. When the first number is divided by 3, the quotient is 15. The other number is.
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If the product of two numbers is 560 and their HCF is 8, find the LCM of those two numbers.
The H.C.F. of two numbers is 22 and the other two factors of their L.C.M. are 9 and 11. The larger of the two numbers is:
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If the sum of 2 numbers is 185, their LCM is 1700 and HCF is 5. Then the difference between 2 numbers is:
