You Are Studying a Plant That Requires a Period of Cold

question 106

Multiple Choice

You are studying a plant that requires a period of cold treatment before it will flower. You subject a plant to cold treatment, return it to temperatures favorable for growth, and then compare the chromatin state of the DNA taken from: (1) meristem cells from a shoot that originated before the cold treatment; (2) meristem cells from a shoot that developed after the cold treatment;
(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 but differ between which two groups?

• A)1, 2 versus 3, 4
• B)1, 3 versus 2, 4
• C)1 versus 2, 3, 4
• D)2, 4 versus 1, 3