The physical expression of genes are phenotype. Phenotype is the expression of the gene by the appearnace of the organism. It is the characteristics of that trait.
Examples : When pigment is made in our eyes, height ( tall and short) , weight, blond hair is the phenotype for the blond hair genotype and skin colour( black, white ) is the phenotype trait.
What ph value does the living bacteria have and if it has a nucleus?
The answer is B since you have to be able to prove/elaborate on the topic sentence
Animal cells do not have a cell wall or chloroplasts but plant cells do. This is just one example there are several ways. <span />