Chapter 9.3, Problem 1CC

Summary Introduction

To identify:

The reason why the nuclei resulting from experiment 2 contain different amount of DNA, as refer to Figure: 9.14 “Inquiry”, in the textbook.

Introduction:

With reference to the data in Figure: 9.14 “Inquiry”, in the textbook, the researchers investigated that “a cell’s progression by the cell cycle is controlled by cytoplasmic molecules”.

As given in experiment 2, researchers cause the fusion of M phase with a cell of G₁ phase. The G₁ phase began to start mitosis. This process resulted in the formation of a spindle and condensation of the chromosomes even though the chromosome had not been duplicated.