Question

1. this drawings shows various stages of mitosis in a fast - growing onion root tip. identify the cells (by number) which are in the following stages of mitosis: interphase prophase metaphase anaphase telophase

Explanation:

Step1: Recall interphase characteristics

Interphase cells have a distinct nucleus and no visible chromosome condensation. Cells 4, 5, 6, 8, 10, 13, 15, 16, 18 are in interphase.

Step2: Recall prophase characteristics

In prophase, chromatin condenses into visible chromosomes and the nuclear - envelope starts to break down. Cells 2, 14 are in prophase.

Step3: Recall metaphase characteristics

Metaphase cells have chromosomes lined up at the cell's equator. Cells 1, 11, 17 are in metaphase.

Step4: Recall anaphase characteristics

Anaphase cells have sister chromatids being pulled to opposite poles of the cell. Cells 7, 9 are in anaphase.

Step5: Recall telophase characteristics

Telophase cells have the formation of new nuclear envelopes around the separated chromosomes and the start of cytokinesis. Cells 3, 12 are in telophase.

Answer:

Interphase: 4, 5, 6, 8, 10, 13, 15, 16, 18
Prophase: 2, 14
Metaphase: 1, 11, 17
Anaphase: 7, 9
Telophase: 3, 12