A Large Number of Genetically Identical Tomato Plants Are Grown

Multiple Choice

A large number of genetically identical tomato plants are grown in a greenhouse.The mean height in this plant population is 84 cm,and the standard deviation is 2.5 cm.The variation in height within this population is most likely due to:

A) a correlation between genotype and environment.
B) the difference between the greenhouse population mean and the whole population mean.
C) differences in the plants' microenvironment.
D) random genetic differences within the population.
E) the use of a nonrepresentative sample to compute the mean.