Biology pls do this assignment for me.

Hoffman

Biology 1406 lecture

Worksheet for Mitosis

Building Knowledge

Hover your mouse over the embedded video. Then, select play and YouTube. Pause it to take notes and read about the topics in the textbook chapter and associated lecture highlights.

1. Using the information in the textbook chapter and associated lecture highlights, describe the structure of the centromere of an unduplicated chromosome. Is it a continuous part of the chromosome or a separate structure?

2. Review figure 12.4 in the textbook chapter. Draw a duplicated chromosome, showing two sister chromatids. Label the centromeric region (centromere) of each one.

Hoffman

Biology 1406 lecture

3. Using the information in the textbook chapter and associated lecture highlights, describe the structure and function of the kinetochore. Give the location of each kinetochore relative to the centromere of each sister chromatid.

Application

Use the information in the following statement to answer all parts of the application section.

Statement

The diploid number of chromosomes in the somatic cells of a species of insect is 6 (2n = 6).

1. In each column, draw the six chromosome(s) and label the centromeric region.

Prophase Telophase and cytokinesis completed

2. Complete the chart.

Stage of Mitosis	Number of centromeres per cell	Number of chromosomes per cell	Pairs of sister chromatids per cell
Prophase
Telophase

3. Upon completion of telophase and cytokinesis, has the chromosome number changed? Explain your answer in no more than three sentences.

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