Suppose that a cell contained the piece of DNA you made in your model. This cell is going to divide by mitosis. Each new cell must receive a complete and accurate copy of the parent cell's DNA. Write the sequence of all copies of the DNA that would be present in the parent cell at the end of interphase.
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Interphase is the stage of the cell cycle where DNA replication occurs. Mitosis is the process of cell division. Show more…
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6. The Cell Cycle STEP 1: Start by selecting your model DNA molecule. Use adenine, thymine, cytosine, and guanine to label one of each on a blank sheet of paper. Also, label deoxyribose and phosphate. Make sure your model is finished and labeled before continuing. STEP 2: Your instructor will initial your lab book. Now, simulate the preparation for DNA replication with cell division. What are the component units that make up the DNA molecule? DNA is replicated in a process called semi-conservative replication. This means that half of the original DNA molecule becomes part of each new copy. STEP 3: Separate your DNA molecule into two strands by breaking the hydrogen bonds between the bases. Which components of DNA make up the sides of the "ladder"? STEP 4: Continue with the replication process by assembling the new sides of each DNA molecule. How are your two strands of DNA related to each other? Why is it important that a complete copy of the entire DNA is replicated during interphase?
Madhur L.
3. During mitosis, a cell divides to generate two daughter cells. The daughter cells are genetically identical to one another, and genetically identical to the original parent cell, both in terms of 1) the DNA sequences they carry and 2) the amount of DNA that they carry. Clearly describe how this occurs. Include in your answer the roles of each of the following in this process (8 points): S phase and interphase of the cell cycle : M phase of the cell cycle DNA replication homologous chromosomes and sister chromatids the mitotic spindle each of the stages of mitosis (prophase, prometaphase, metaphase, anaphase, telophase) cytokinesis
Adi S.
The following illustrations represent a cell in a species with a diploid chromosome number of 4 just prior to and at the onset of cell division (either mitosis or meiosis). As you answer the next several questions, keep in mind the form of the genetic material before and during cell division. a In the nucleus of the blank cell at right, draw the genetic material as it would appear during interphase. b What term is used when referring to the genetic material in this form? c What is happening to the genetic material in the nucleus at this time? d In the blank cell at right, draw the genetic material just after cell division has begun (in prophase). e How do we refer to the genetic material in this form? 7 The illustration at right represents a cell undergoing mitosis. This species has a diploid chromosome number of 6. a Draw the chromosomes in the parent cell. Be sure to include the correct number of chromosomes and the correct state of the chromosomes (single vs. doubled). b Draw the chromosomes in the daughter cells. Again, include the correct number of chromosomes and the correct state of the chromosomes (single vs. doubled). c If this were the cell of a human, how many chromosomes would each cell have?
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