Controls 5.The experiment described above uses the isotopes N and 15N to label D

Question

Controls 5.The experiment described above uses the isotopes N and 15N to label DNA. At the atomic level what is the difference between 4N and 15N? points d., ktorenne between Cavne number cr netto Het M has Pawar nach the N 15 hecwiw in N ,r 6. suppose a double-stranded similar to DNA itself, one molecule NSwi W contains two and the other molecule contains two new strands. Such replication tia would be an instance of what type of replication? (3 points) Conservative repl cat Conservative be coun e i keeps an e Str

Explanation / Answer

(5) Isotopes are the atoms with the same number of protons but that have a different number of neutrons. N14 and N15 differ in 1 neutron between them.

Specifically, N15 is one neutron heavier than the N14

Atomic number of Nitrogen is 7

Number of protons and neutrons in N14 are 7 each

Number of protons and neutrons in N15 are 7 and 8 respectively.

(6)

This model is called Conservative model of DNA replication

In this model of DNA replication, one daughter molecule contains both parental DNA strands (old DNA), and the other daughter molecule contains DNA strands of all newly-synthesized material.

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