Which scientist conducted tests on extracts made of bacteria to show that the genetic material in bacteria is dna? a. martha chase b. oswald avery c. frederick griffith d. alfred hershey

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

All organisms contribute some water to the water cycle by conducting

Which of th following best describes how genes produce traits in an organism?