In which step of the scientific method would you refine your hypothesis, if necessary?
observation

hypothesis

experimentation

conclusion

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

Amines amides and amino acids are categories of

According to cell theory; which structures carry out the basic function of living things? a. atoms b. organs c. cells b. nuclei