Are You Another Einstein?

Take 5 minutes to answer this question in

your notebook…

A cell containing a single chromosome is placed in a medium containing radioactive phosphate, so that any new DNA strands

that are formed by replication will be radioactive. The cell replicates its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line and radioactive DNA strands as a dotted

line.

5 minutes

A cell containing a single chromosome is placed in a medium containing radioactive

phosphate, so that any new DNA strands that are formed by replication will be radioactive.

The cell replicates its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that

there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line

and radioactive DNA strands as a dotted line.

4 minutes

A cell containing a single chromosome is placed in a medium containing radioactive phosphate, so

that any new DNA strands that are formed by replication will be radioactive. The cell replicates

its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that

there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line and

radioactive DNA strands as a dotted line.

3 minutes

A cell containing a single chromosome is placed in a medium containing radioactive

phosphate, so that any new DNA strands that are formed by replication will be radioactive.

The cell replicates its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that

there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line

and radioactive DNA strands as a dotted line.

2 minutes

A cell containing a single chromosome is placed in a medium containing radioactive phosphate,

so that any new DNA strands that are formed by replication will be radioactive. The cell replicates

its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that

there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line and

radioactive DNA strands as a dotted line.

1 minute

A cell containing a single chromosome is placed in a medium containing radioactive phosphate,

so that any new DNA strands that are formed by replication will be radioactive. The cell replicates

its DNA and divides.

Then the daughter cells (still in the radioactive media) replicate their DNA and divide, so that

there are a total of 4 cells present.

Sketch the DNA molecules in all 4 cells showing normal DNA strands as a solid line and

radioactive DNA strands as a dotted line.

10 second

s

9 second

s

8second

s

7second

s

6second

s

5second

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4second

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3second

s

2second

s

1second

It’s Time to Start Class!

E =MC

2

Answer