How is the earthworm beneficial to the formation of soil? a) they eat soil. b) they digest soil. c) they mix soil. d) they aerate soil. e) all of the above.

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele