Examine the following diagrams of cells from an organism with diploid number 2n=6, and identify what stage of M phase is represented.

Verified step by step guidance

1. Identify the diploid number of the organism, which is 2n=6, meaning there are 6 chromosomes in total.
2. Understand that M phase, or mitosis, consists of several stages: prophase, metaphase, anaphase, and telophase.
3. Examine the diagrams of the cells to determine the arrangement and appearance of the chromosomes.
4. Look for key characteristics of each stage: condensed chromosomes and spindle formation in prophase, alignment of chromosomes at the metaphase plate in metaphase, separation of sister chromatids in anaphase, and decondensation of chromosomes in telophase.
5. Match the observed characteristics in the diagrams to the descriptions of the stages to identify the specific stage of M phase represented.

Key Concepts

M Phase

M Phase, or mitotic phase, is the stage of the cell cycle where cell division occurs. It includes both mitosis, the process of nuclear division, and cytokinesis, the division of the cytoplasm. Understanding M Phase is crucial for identifying the specific stage represented in the diagrams, as it encompasses several distinct phases: prophase, metaphase, anaphase, and telophase.

Diploid Number

The diploid number (2n) refers to the total number of chromosomes in a somatic cell, where chromosomes exist in pairs. In this case, 2n=6 indicates that the organism has six chromosomes, or three pairs. Recognizing the diploid number helps in understanding the genetic makeup of the organism and the implications for chromosome behavior during M Phase.

Chromosome Structure During M Phase

During M Phase, chromosomes undergo significant structural changes, becoming highly condensed and visible under a microscope. Each chromosome consists of two sister chromatids joined at the centromere. Identifying the arrangement and number of chromatids in the diagrams is essential for determining the specific stage of M Phase, as the appearance of chromosomes varies between prophase, metaphase, anaphase, and telophase.