Modeling Meiosis
Investigation 1
Part 2
Hypothesis
If a model of meiosis is built out of oreo cookies then your interpretation of the phases of meiosis will be a lot more accurate with this much simpler example.
Materials
Original Oreos (10)
Sprinkles
Paper Towel
Procedures
1. Gather all of your materials (10 oreos, sprinkles, and paper towels)
2. Grab your paper towel and make sure it is big enough to spread all 10 of your oreos.
3. Gather all 10 of your oreos and SLOWLY/CAREFULLY pull them apart from one another and make sure the white stuffing remains all on ONE side. *make sure not to break any cookies*
4. Put aside the plain brown oreo piece in the edge of the paper towel because it won't be necessary throughout this lab. (unless if your hungry)
5. Begin to spread out the oreo half that contains the white stuffing on top in a straight line across the paper towel.
6. Carefully begin to create the phases of meiosis on your oreo pieces with the white stuffing and try to make it as detailed as possible.
7. Once you have completed your phases of mitosis on the oreos make sure to line them up in order.
8. Record your data (take a photo), and for your own convenience label your phases.
9. Once you have gathered your data you may eat the oreos.
10. Once everything has been completed make sure to wipe down your station and to throw away all trash.
Key
Sprinkles = chromatids, chromosomes, meiotic spindle, centrioles, nuclear envelope
Oreos = all phases
Justification
In this lab report you are able to identify the phases of meiosis and exactly what meiosis does. This model of meiosis that consists of Oreos is allowing you to understand the steps in order. Once you have reviewed this lab you will be able to understand how this cell division will result into four daughter cell and how this is a production of gametes.
In this lab report you are able to identify the phases of meiosis and exactly what meiosis does. This model of meiosis that consists of Oreos is allowing you to understand the steps in order. Once you have reviewed this lab you will be able to understand how this cell division will result into four daughter cell and how this is a production of gametes.
Analysis Questions
Question 1: Identify 1 step in your model where a mistake could occur. Describe the consequences of that mistake on the organism's possible progeny. An error that could occur in my model is the incorrect copying of the DNA sequence. That error can occur when the DNA is replicated before its division. Another error would also be when the chromosomes isolate themselves from the daughter cells.
Question 2: Compare and Contrast the process of mitosis and meiosis. Mitosis and Meiosis are both processes of cell division and they both follow along the lines of the same steps. One of the differences between mitosis and meiosis is that meiosis occurs only in the testes and ovaries with ONLY germ cells. Meiosis also results in four daughter cells and the main purpose of meiosis is to create gametes. On the other hand mitosis only happens in somatic body cells and the results from that process are only two daughter cells, but the MAIN difference between meiosis and mitosis is the amount of chromosomes in the cell. Mitosis is what produces diploid cells and contains the full amount of chromosomes, while meiosis produces haploids and it only contains half the amount of chromosomes.
Conclusion
From this lab you should now be able to understand the two different types of cellular reproduction. Now you are also able to identify that there are differences between mitosis and meiosis as well as similarities, and they both start off with duplicate sets of chromosomes.
From this lab you should now be able to understand the two different types of cellular reproduction. Now you are also able to identify that there are differences between mitosis and meiosis as well as similarities, and they both start off with duplicate sets of chromosomes.