Instructions: Figure 1 is a photomicrograph of an onion root tip. Figure 2 is another photomicrograph of an onion root tip in higher magnification. You have to find all the stages in mitosis using these figures. Encircle the different stages that you are able to find and identify in these two figures. Label these as follows: -Interphase P-Prophase M-Metaphase A- Anaphase T-Telophase

Q: 1. Draw and label the chromosomes at metaphase. Identify the types of chromosomes in the genome.…

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Q: 5. If the cell in no.4 will proceed to Telophase II, draw, and label the chromosomes in the four…

A:

Q: Objective: To review the phases of mitosis with the understanding that in a real tissue or a…

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Q: Identify the phase in mitosis in which the chromatin condenses into chromosomes. Select one: a.…

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Q: 1. In figure 1 locate the mitotic zone or region of cell division. Next, identify mitotic stages…

A: Answers to Point 1: The lower part of the onion root tip is the area of cell division The dark…

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Q: The function of the M-phase checkpoint is to check that the microtubules of the mitotic spindle have…

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Q: Use the red circles to identify any cells undergoing MITOSIS!

A: In mitosis two daughter cells are formed from one parent cell.

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Q: In general, are somatic cells genetically identical? Why or why not?

A: Answer is 2.) no - they come from mitosis.

Q: (e) If half the chromosomes of a human primary oocyte segregate into the first polar body, which…

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Q: 1 2 3 4 5 The figure above shows the mitotic phases in onion root tip, which are named: O A.…

A:

Q: Using the chromatophore (pigmented) cells of zebra fish as an experimental system, you and a…

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Q: Why is the onion root tip a good choice for viewing cells in different stages of the cell cycle?

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Q: 2. In what stage were most of the onion root tip cells? Does this make sense? 3. As a cell grows,…

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Q: hat are the enzymes that untwist the double helix at the replication forks called? -Helicases…

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Q: DIRECTIONS: 1. On the left line indicate whether the statement is true (+) or false (O). 2. If the…

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Q: for this week's lab, you will be studying images of the onion root and identifying cells in various…

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Q: 1. According to your results, during which phase of the cell cycle do onion root cells spend the…

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Q: Exercise 2- Mitosis in Plant Cells. 1. Label Figure 2 with phases of mitosis. Determine the diploid…

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Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.