Tt is a genotype different than tt. The first one has two different alleles (T and t) the second one has one kind of alleles (t).
The fenotype of Tt is given by the dominant character (which is the capitalized one, T) while the fenotype of tt is t (because it is the only one).
Then, there are two different genotypes and two differente phenotypes.
Answer: The two have different genotypes and different phenotypes.
I think respiration and reproduction
Homeostasis is a characteristic of life,Homeostasis can occur at the cellular level,<span>Homeostasis can occur at the system level.</span>
Energy is the rate at which work is done on an object
Answer:
The mean weight of the progeny is 
grams
Explanation:
Given -
Mean fruit weight of tomato plant (M1) 
g
Narrow sense heritability (h2) 
g
Mean weight of tomato plant selected for artificial selection (M0) 
g
Substituting the given values in above equation, we get -
The mean weight of the progeny is grams
