Alleles can best be defined as: A: The things that makeup genes
B: Traits that are controlled by single genes
C: Different patterns of inheritance
D: Different versions of a gene

Harold makes a venn diagram to him compare and contrast mitosis and meiosis. which label belongs in the region marked z? forms diploid cells creates an even number of cells includes two rounds of cell division duplicates body cells

What is the name for a substance formed in a chemical reaction

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?