arks Window Help ezto.mheducation.com homework 21-$$18-BS-161-001-Cells and Mole
ID: 257962 • Letter: A
Question
arks Window Help ezto.mheducation.com homework 21-$$18-BS-161-001-Cells and Molecules k 21 Question 12 (of 19) Save & Exit Submit value: 1.05 points Altering the Meselson-Stahl experiment, pt. 2 You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coll cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the conservative model of DNA replication is correct, what is the exgected distribution of DNA in the density gradient after two rounds of replication? O One band of intermediate density. O One band of heavy density and one band of intermediate density O One band ot heavy density and one band of light density One band of light density and one band of intermediate density O One band of heavy density. References eBook & Resources Multiple Choice Altering the Meselson-StohtDuing DNA Replication experiment, pt. 2 Sedian 1403 Both Srands Ave CopedExplanation / Answer
Answer - One band of heavy density and one band of intermediate density.
It grows on N14 medium light density so both strand has N14 nitrogen.
Then transfer to N15 medium high density. In first round of replication the N14 strand opens and done replication in N15 medium. So, N14-N15 hybrid form in one round of replication.
Then second round replication N14-N15 hybrid opens and replication starts.
N14 strand do replication and have N14-N15 hybrid and N15 replicates in N15 medium has N15-N15 strand.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.