If a hybrid text{DNA} (N^{15}N^{14}) is allow | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The replication of $	ext{DNA}$ is semi-conservative.Starting with one hybrid $	ext{DNA}$ molecule $(N^{15}N^{14})$:Generation $0$: $1$ hybrid $(

Vedclass · Accepted Answer

$2$

Vedclass · Answer

(A) The replication of $	ext{DNA}$ is semi-conservative.Starting with one hybrid $	ext{DNA}$ molecule $(N^{15}N^{14})$:Generation $0$: $1$ hybrid $(N^{15}N^{14})$.Generation $1$: The $N^{15}$ strand and $N^{14}$ strand separate. Each acts as a template for a new $N^{14}$ strand. Result: $2$ hybrid $	ext{DNA}$ $(N^{15}N^{14})$.Generation $2$: The $2$ hybrid molecules produce $2$ hybrid $(N^{15}N^{14})$ and $2$ light $(N^{14}N^{14})$ $	ext{DNA}$ molecules.Generation $3$: The $2$ hybrid molecules produce $2$ hybrid $(N^{15}N^{14})$ and $2$ light $(N^{14}N^{14})$ $	ext{DNA}$ molecules,while the $2$ light molecules produce $4$ light $(N^{14}N^{14})$ $	ext{DNA}$ molecules.Total $	ext{DNA}$ molecules after $3$ generations = $2^3 = 8$.Number of $	ext{DNA}$ molecules containing the original $N^{15}$ strand = $2$ (these are the $2$ hybrid molecules).

If a hybrid $\text{DNA}$ $(N^{15}N^{14})$ is allowed to replicate in an $N^{14}$ medium,after three generations,how many $\text{DNA}$ molecules will contain $N^{15}$?

Similar Questions

Which of the following statements is correct about $DNA$ polymerase?

In $DNA$ strand replication, Okazaki fragments are:

$E. coli$ has only $4.6 \times 10^{6}$ base pairs and completes the process of replication within $18$ minutes; then the average rate of polymerisation is approximately

Which organism was used as experimental material to study $DNA$ replication?

During $DNA$ replication, the term leading template is applied to the one which replicates itself in $A$ and the replication is $B$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module