Morning glories are plants that have a large amount of variation in the genes for flower color. When a white flower appears in a population independent of the trait for white flower color, what is the MOST likely source? a. genetic mutation
b. selective breeding
c. genome duplicating
d. sexual recombination

Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? a. 5 b. 3 c. 7 d. 1

Select all the correct answers. which statements fail to meet the requirements of a scientific claim? a) in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency. b) flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. c) even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true. d) the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today.

In a scientific investigation, what is the name for a prediction that can be tested? a. conclusion b. evidence c. hypothesis d. verification