Natural selection works b/c of 3 things:<quoted text>
Sorry peanut but random mutations? That means the outcome is unpredictable making impossible to project the outcome. How would it come out with male and female of the same species?
1. traits are inheritable (we call these genes).
2. variation exists in populations (it arises from mutation; mutation is not random, but unpredictable)
3. scarce resources that causes competition among individuals for those resources
Natural selection is differential reproduction and survival. Those who survive to adulthood and are able to reproduce, because of their genetic traits, will tend, on average, to have their genes in the gene pool dominate over others' genes.
Evolution by natural selection is the outcome of math.
If you don't understand this, in what way don't you understand? I will do my best to clarify for you.