If the temperature is too low, enzyme molecules don’t have enough kinetic energy to collide and combine with other substrate molecules. So the enzyme activity/ reaction rate will be very low. The rate will rise again once the temperature increases to its optimum temperature.
But if the temperature is too high, enzyme will be denatured, which means the shape of the active site of the enzyme is changed. It can no long combine with other substrate molecules. The rate will drop significantly. Yet, lowering the temperature won’t help because denaturation is permanent and irreversible.
You test a hypothesis by carrying out an experiment.
They would be found in the Temperate deciduous forests
In the first generation, there are 490 brown fruit flies and 4 ebony fruit flies. This mean that the frequency of the brown (p2) is 490/490+4 = 0.992 and the frequency of the ebony (q2) is 4/490+4 = 0.008. The frequency of the dominant allele is p=√0.992=0.995 and the frequency of the recessive allele is q=√0.008=0.089. p+q=1 (HW)
The Hardy-Weinberg equilibrium principle describes that frequency of alleles is unchanged through the generations.
Gen 2.
p2= 857/857+7=0.991
q2=7/857+7=0.008
Gen 3.
p2= 612/612+5=0.991
q2=5/612+5=0.008
Gen 4.
p2= 367/367+3=0.991
q2=3/367+3=0.008
Gen 5.
p2= 980/980+8=0.991
q2=8/980+8=0.008
The frequency of alleles is unchanged, population is not evolving.
