The gene sequence of a DNA determines the variation of genetic expression in phenotypes.
DIRECTIONAL Selection
A trait
The speed in which a molten rock is solidified, determines the size and type of crystals.
genetic variation (from any of several sources) provides options to try.natural selection determines which of those options help the population most.
having genetic variation among most of its members
Variation within a population in which few or no intermediate phenotypes fall between the extremes.
Gene Flow
Phenotype variation is slight variations in a phenotype that are caused by the expression of an organism's genes or the influence of environmental factors. A species can have several different phenotypes within it.
DIRECTIONAL Selection
Variation in Genotypes result in variations of Phenotypes which lead to the Possibility of Biological Development that did end up being Survival of the Fittest.
A trait
You can inherit height, hair color, and eye color.
latitude
genetic variation
Genetic variation. If there were no variation in the genes/phenotype then natural selection would have nothing to select from.
a person foot size can be determine by discontinuous variation
It determines how much of a risk you are taking, compared to the amount of return you can expect back from your investment.