what must happen before meiosis can begin A. the cell splits into four parts B. the chromosomes must replicate C. four haploid cells are produced D. DNA must duplicate four times

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?

Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids

What does the positioning of transcription factors determine?