Flamingos are born white, but they turn pink because of the food they eat; this is an example of how environment, a physical factor, can affect phenotypes.
<span>The phenotype is the visible physical or biochemical characteristic of an individual organism which is determined by both genetic factors (genotype) and environmental influences. There are many e</span><span>nvironmental factors and they include diet, climate, illness and stress. If environmental factors have a strong influence this means the phenotypic plasticity is high (capable to change).</span>
<span>Answer: Cellular differentiation is responsible for one daughter cell becoming a sieve tube whereas the other becomes a companion cell. Cell differentiation occurs as different genes are switched on and off.
