The promotion of flowering in response to a prolonged exposure to cold temperatures (i.e. winter) is a useful adaptation

[answerhappygod]

The promotion of flowering in response to a prolonged exposure
to cold temperatures (i.e. winter) is a useful adaptation for plant
species that flower in the spring. To determine the genetic
mechanism for this, you examine two ecotypes of a common plant
species. You identify a protein (X) that you believe is involved
and you collect the following data to help you examine this
relationship.
Table 2: Experimental data for growth conditions and days to
flower for two contrasting plant ecotypes
Experimental Day
Mean Temperature
Hours of daylight
Ecotype A growth stage
Ecotype B growth stage
1
22.2°C
12
vegetative
vegetative
7
21.8°C
10
vegetative
vegetative
14
23.1°C
8
vegetative
flowering
21
4.2°C
8
vegetative
flowering
28
5.1°C
8
vegetative
flowering
35
3.8°C
8
vegetative
flowering
42
4.1°C
8
vegetative
flowering
43
22.3°C
10
vegetative
flowering
50
22.1°C
12
flowering
senescence
1. Is X an activator or repressor of flowering? What
experimental variable does it respond to? Explain your logic by
referring to the data.