Tires should be replaced when

a. tread depth is low

b. they are cracked

c. air pressure is low

d. a and b

Motorcyclists may have to suddenly change direction when encountering a. potholes and reflective markers b. yellow lights c. pavement seams and railroad crossings d. strong winds

Territorial insects like spiders that fight off intruders would be expected to be a) regularly distributed b) randomly distributed c) clustered together d) b and c e) selectively distributed

15. the graph above shows the genotype frequencies for a particular genetic locus at different allele frequencies in a population. using the graph, determine the frequency of the dominant allele in the population if the frequency of homozygous recessive individuals in the population is 0.75. enter your answer as a value between zero and one to the nearest hundredth.