Two plants, both heterozygous for the gene that controls flower color are crossed what is the percentage of their offspring will have purple flowers

PP:Pp:pp

25%:50%:25%

Explanation:

the probability genotype is PP:Pp:pp. 70% of the flowers will be purple.

           P          p

P       PP         Pp

p       Pp         pp

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.