Cytokinesis and Mitosis Reflection

Introduction: Find out the difference between Cytokinesis and Mitosis.  How do they go together in order to complete the cell division process?  


I did two virtual labs about Cytokinesis and Mitosis. We were looking for the cell divisions and also nuclear divisions. From the first virtual lab that I did I found out that there was a cellular division cycle and it was interesting that there was so many of them. There were 5 parts in the process. First is the Interphase. The Interphase has the most cells. The Interphase is the cell engaged in metabolic activity and performing its duty as part of a tissue. The chromosomes are not clear in the nucleus, although a dark spot called the nucleolus may be visible. Then comes the prophase. The chromatin in the nucleus begins to condense and becomes visible in the light microscope as chromosome. In this step the chromosomes begin moving. After Prophase comes the Metaphase. This is when the spindle fibers align the chromosomes along the middle of the cell nucleus. The line is called the Metaphase plate.The last to parts in the cycle are Anaphase and lastly Telophase. The Anaphase is when the paired chromosomes separate at the kinetochores and move to opposite sides if the cell. The Telophase is the last step in the cycle and it is when new membranes from around the daughter nuclei while the chromosomes disperse and are no  longer visible under the light microscope. In this virtual lab I also noticed that when the cell is not dividing, the nucleus always stays black, possibly being in the Interphase. 

 

Online Onion Root Tips Activity

Congratulations! Here comes the quantitative part of this experiment. Scroll down this page and count up all of the cells in each category, and enter your findings in the top row of your table.Then, calculate the percentage of cells in each phase, and enter those values on the bottom row of the table.

INTERPHASE	PROPHASE	METAPHASE	ANAPHASE	TELOPHASE

	Interphase	Prophase	Metaphase	Anaphase	Telophase
number of cells	20	10	3	2	1	36

Make The Right Call! Lab

Problem (Guiding Question) : How can you predict the possible results of genetic crosses?

Hypothesis: I guess you can make an educated guess.

Data Table

Number: 1

Trial	Allele from bag 1 (female parent)	Allele from bag 2 (male parent)	Offspring’s Alleles (genotype)
1	B	b	Bb
2	B	b	Bb
3	B	b	Bb
4	B	b	Bb
5	B	b	Bb
6	B	b	Bb
7	B	b	Bb
8	B	b	Bb
9	B	b	Bb
10	B	b	Bb

Number: 2

Trial	Allele from bag 1 (female parent)	Allele from bag 2 (male parent)	Offspring’s Alleles (genotype)
1	B	b	Bb
2	B	b	Bb
3	B	B	BB
4	B	B	BB
5	B	B	BB
6	B	B	BB
7	B	b	Bb
8	B	b	Bb
9	B	b	Bb
10	B	B	BB

Number: 3

Trial	Allele from bag 1 (female parent)	Allele from bag 2 (male parent)	Offspring’s Alleles (genotype)
1	b	b	bb
2	B	b	Bb
3	b	b	bb
4	b	B	Bb
5	b	b	bb
6	b	b	bb
7	B	B	BB
8	B	b	Bb
9	B	B	BB
10	b	b	bb

Analyze & Conclude

1. Making Models 

	b	b
B	Bb	Bb
B	Bb	Bb

	B	b
B	BB	Bb
B	BB	Bb

	B	b
B	BB	Bb
b	Bb	bb

2. Interpreting Data

Only 1 offspring is possible. They are both purebred, There was two blue in bag 1 and two white in Bag 2. The results in the punnet square are correct because each square has the same.

3. Predicting

There are two different kinds which are BB and Bb. Both of them have a 50 % chance. Both are in two squares in the punnet square.

4. Making Models

There are three different kinds of offspring's in my Punnet Square. BB has a chance of 25 %, Bb has a chance of 50 % and bb has a chance of 25 % like BB. The model agrees with the punnet square because Bb has two squares and BB and bb has only one. 

5. Inferring

If I did 100 trials instead of 10 trials there wouldn't be a really accurate answer, but I think that the result would be closer to 50 % for each one. This would prove it much more than doing only 10 trials. This is because we would have more chance to equal it with more tries. 

6. Communicating

The two methods are quite similar in a sense that both of them can be used to predict the probability of the offspring inheriting certain traits from their parents. However, they do have a major difference. The Punnet Square is being used to predict the possible outcomes of a genotype, the marble model is a test for the Punnet Square.