Name: __________________________ BIOLOGY EOC REVIEW PACKET Scientific Method 1. Define the following: a. Independent Variable: the variable that I change in the experiment b. Dependent Variable: the variable that I am measuring (it depends on the independent variable) c. Control Variable: variable that stay the same d. Controlled experiment: an experiment in which only one variable is changed at a time e. Hypothesis: an educated guess (If…‚ then…) 2. You have measured the
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Lab #3: Mitosis and Meiosis To investigate the processes of mitosis and meiosis. Cells come from previous existing cells. New cells are formed by cell division‚ which involves karyokinesis and cytokinesis. Karyokinesis is the division of the cell’s nucleus and cytokinesis is the division of the cytoplasm. Mitosis and meiosis are the two types of nuclear division. Mitosis results in body cells: the formation of an adult organism from a fertilized egg‚ regeneration‚ asexual reproduction‚
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Spermatogenesis From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Seminiferous tubule with maturing sperm. H&E stain. Spermatogenesis is the process by which male primordial germ cells called spermatogonia undergo meiosis‚ and produce a number of cells termed spermatozoa. The initial cells in this pathway are called primary spermatocytes. The primary spermatocyte divides into two secondary spermatocytes; each secondary spermatocyte then divides into two spermatids. These develop
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Muneet Dhaliwal Jasmeen Gill Amit Natt Jaideep Bhattal This question is based on the process of Meiosis 1.TOTAL 8 marks Matching. In each space at left‚ place the number of the closely associated statement from the list at right. Each term is correct only once ( 0.5 mark each) Terms: Statements: 2 Meiosis 4 Synapsis 8 Homologous chromosomes 1 Synaptonemal complex 7 Karyotype
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had explained the same result 35 years go. Resistance remained about Mendels laws until evidence had supported it. Chromosoems and genes are both present in pairs of diploid cells. Homologous chromosomes separate and alleles segregate during meiosis. Fertilization restores the paired condition for both chromosomes and genes. Around 1902‚ the chromosome theory of inheritance began to take form. Thomas Hunt Morgan was the first t associate a specific gene with a specific chromosome in the
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How did the info in my DNA become my traits? This is a question that has been asked by many over the course of history.To answer this question we need to answer three essential questions‚ the first‚ how did we get our DNA‚ how did we go form one cell to trillions‚ and how did DNA become our traits. There is one essential driver to all of this‚ DNA‚ to understand DNA‚ we need to know what DNA is. DNA is two strands that contain genetic information in four bases‚ adenine‚ guanine‚ cytosine and thymine
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CHAPTER 2: CELLS Learning about disease is often simplified by growing it in a dish – some cells like heart and nerve cells however do not grow easily outside the body. Cellular reprogramming takes cell back to a state similar to stem cells and then coaxes them to specialize in a different way. Example – LEOPARD syndrome MIM 151100. Acronym for symptoms: enlarged heart w/blocked valves to the lungs‚ freckles‚ abnormal genitals‚ deafness. Skin cells taken from patients were reprogrammed to give
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chromosomes. Males have one X and one Y‚ while females have 2 X and no Y-chromosomes. During meiosis‚ the number of chromosomes is reduced and genetic information is shuffled allowing for variations‚ such as eye or hair color. Occasionally however‚ humans are born with an abnormal number of chromosomes because they incorrectly separate during meiosis. This is called nondisjunction‚ and can happen during meiosis I when both members of the same homologous pair go into the same daughter cell or II‚ if the
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Section___________________________________ Date_________________ EXERCISE NO. 1a MITOSIS OBJECTIVES The students should be able to: 1. identify the different steps involved in mitosis and meiosis; 2. describe the behavior of the chromosomes during each stage of cell division; 3. identify specific events in mitosis and meiosis that allow the inheritance of traits and generation of variation. MATERIALS A. Microscopic Examination Compound microscope cover slip Prepared slides of onion root
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AP Cell Cycle and Genetics Test Corrections 7. D B Golgi-derived vesicles are primary responsible for the cytokinesis in plant cells but not in animal cells because the Golgi-derived vesicles are only present in the plant cell. 8. C D Preventing the shortening of the microtubules will cause the movement of the chromosomes during the anaphase because anaphase involves the separation of the sister chromatids at the centromeres via the shortening of the spindle fibers. 9. B D During
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