The hardy-weinberg principle is written as the equation p 2 + 2 pq + q 2 = 1. what does p represent?

P is the frequency of the dominant allele.

Explanation:

Allele is a variant of a gene, and the allele frequency is the proportion of this gene in a population. This frequency tells us how common is an allele in such population.  

So, the frequency of the dominant allele represents the proportion of the dominant allele in the population.

The letter p is used to denote the frequency of the dominant allele.

who knows

explanation:

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.