CH 9 Mastering Bio Exam Questions with Correct Answers| Guaranteed Success

CH 9 Mastering Bio Exam Questions with Correct Answers| Guaranteed Success How do the genes in DNA control cell function? Genes carry the instructions for making proteins; genes control cells by controlling protein production. What word is used to describe the exact position of a gene on a chromosome? Locus At what point in the cell cycle does a cell decide to undergo cell division? G1; the decision in G1 to divide is what causes the cell to progress to S phase. What must happen before a cell can begin mitosis? The chromosomes must be duplicated, which occurs during interphase. The centrosomes move away from each other and the nuclear envelope breaks up during which phase of mitosis? Prophases it the first phase of mitosis, when the centrosomes begin moving toward opposite poles and the nuclear envelope breaks up. The chromosomes line up in the center of the cell during which phase of mitosis? Metaphase occurs in the middle of mitosis, when the chromosomes line up in the middle of the cell. The sister chromatids separate and begin moving toward opposite poles of the cell during which phase of mitosis? Sister chromatids separate and start their migration toward opposite poles during anaphase. The chromosomes arrive at the poles and nuclear envelopes form during which phase of mitosis? Telophase is the final phase of mitosis, when the chromosomes have arrived at the poles and the nuclear envelopes of the two new cells form