You are studying a plant that requires a period of coldtreatment before it will flower. You subject a plant to coldtreatment, return it to temperatures favorable for growth, and thencompare the chromatin state of the DNA taken from:
(1) meristem cells from a shoot that originated before the coldtreatment;
(2) meristem cells from a shoot that developed after the coldtreatment;
(3) ovule egg cells from a flower on stem 1;
(4) seeds from a flower on stem 2.
You find that the chromatin states are the same within butdiffer between which two groups?
| | 2, 4 versus 1, 3 |
| | 1 versus 2, 3, 4 |
| | 1, 3 versus 2, 4 |
| | 1, 2 versus 3, 4 |
