Form a Hypothesis A scientist uses radioactive nitrogen to label the nitrogenous bases
of the DNA of a cell. Then the DNA is allowed to replicate, and the new strands take up
non-radioactive bases. Do one, both, or neither of the daughter cells have radioactive
DNA? Explain.

Environmental impacts on evolution : mastery test

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano