Newsdate: March 1, 2030 A unique creature has been discovered during exploration
ID: 226607 • Letter: N
Question
Newsdate: March 1, 2030 A unique creature has been discovered during exploration of outer space Recently, its genetic material has been isolated and analyzed This material is similar in some ways to DNA in its chemical makeup It contains in abundance the 4-carbon sugar erythrose and a molar equivalent of phosphate groups In addition, it contains six nitrogenous bases adenine (A) guanine (G). thymine (T). cytosine (C). hypoxanthine (H). and xanthine (X) These bases exist w the following relative proportions A = T = H and C = G = X X-ray diffraction studies have established a regularity in the molecule and a constant diameter of about 30 A Together, these data have suggested a model for the structure of this molecule. What base pairing properties must exist for H and for X in the model? Select the two correct statements. X, C, and G are hydrogen bonded to one another. H and X base pair with each other. X, A, and T are hydrogen bonded to one another. H, A and T are hydrogen bonded to one another. H, C. and G are hydrogen bonded to one another.Explanation / Answer
options a and d are correct
X, C and G are hydrogen bonded to one another
H , A and T are hydrogen bonded to one another
as we know in human DNA molecule A =T and G = C and they are hydrogen bonded so here when A=T=H and C=G=X so they will also be hydrogen bonded because if they bond with each other only then their numbers can be equal.