Soil bacteria are not responsible for

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

How does human environment effect the biosphere

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