Biology Exam 2013 - Review UNIT: PATERNS OF INHERITENCE Describe Mendel’s experiments: * Chose a female parent; chooses a male parent; pollen is collected from the stamens and dusted onto the female parent stigma; pollen fertilizes the eggs. The ovary develops into the pod and eggs develop into the peas; when peas are planted they develop into pea plants. Why Pea Plants? * Easily obtained * Grown quickly; several generation of peas can be observed * Traits are easily visible
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number of chromosomes in each of their body or somatic cells that is unique for that organism. This is called their diploid or 2n number. 2. Cells go through a cell cycle‚ whereby‚ much of the cycle does not include division‚ but at the end of this interphase in their cycle‚ they go through mitosis. 3. Cells replicate their DNA in the S phase of the cell cycle. 4. In the process of mitosis‚ cells replicate their DNA in the nucleus‚ form sister chromatids held together by centromeres‚ then are divided
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prophase: chromosomes condense metatphase: line up on eqator anaphase: pull apart telephases: nuclear membrane forming. 2 daughter cells 46 chromosomes in parent cell‚ > 2 daughter cells (46 chromosome each) Interphase= cell grows‚ DNA duplicates chromosomes‚ cell prepares for division Meiosis 1 parent cell > 4 daughter cells (23 chromosomes each) gametes= sperm/egg zygote= when sperm and egg meet ( end up with 46 chromosomes) prophase 1 – crossing
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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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Page Figure 1 Overview of Mitosis | 6 | | | Figure 2 Overview of Meiosis | 7 | | | Figure 3 Interphase of Mitosis | 9 | | | Figure 4 Prophase of Mitosis | 10 | | | Figure 5 Metaphase of Mitosis | 10 | | | Figure 6 Anaphase of Mitosis | 11 | | | Figure 7
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disease caused by an uncontrolled division of unusual cells in a part of the body. It is a disease of mitosis‚ which begins when one cell is transformed from a normal cell to a cancerous cell. Mitosis is a type of cell division which has 6 steps (Interphase‚ Prophase‚ Metaphase‚ Anaphase‚ Telophase‚ and Cytokinesis) that result in two daughter cells that are clones of the parent. Cancerous cells do not abide by the normal instructions of mitosis. Instead‚ the cells speed through many of these stages
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organelles. This phase can take about S phase is where DNA synthesis occurs and a copy of the DNA is made in the nucleus. G2 is known as the Second Gap Phase where the cell grows and prepares for cell division. G1‚‚S‚ and G2 phases all make up interphase of cellular division. During the M phase‚ mitosis and cytokinesis occurs. In mitosis‚ 4 stages of cellular division occur: prophase‚ metaphase‚ anaphase‚ and telophase. In cytokinesis‚ the cytoplasm of the cell splits‚ making 2 new cells. The G0
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The Cellular Basis of Reproduction and Inheritance Chapter 8 Order Reproduction Growth and development Energy processing Response to the environment Regulation Evolutionary adaptation http://www.youtube.com/watch?v=46Xh7OFkkCE Introduction Cancer cells start out as normal body cells undergo genetic mutations lose the ability to control the tempo of their own division run amok‚ causing disease In a healthy body‚ cell division allows for: growth the replacement of damaged cells development from
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Chapter 3: The Multiple Choice 1. a. b. c. d. e. 2. a. b. c. d. e. 3. a. b. c. d. Cellular Level of Organization What are the three main parts of a eukaryotic cell? Plasma membrane‚ organelles‚ cytoplasm Plasma membrane‚ organelles‚ nucleus Plasma membrane‚ cytoplasm‚ organelles Plasma membrane‚ cytoplasm‚ nucleus Plasma membrane‚ cytosol‚ organelles Plasma membranes consist of what three components? Phospholipids‚ glycoproteins‚ water Proteins‚ cholesterol‚ fatty acids Cholesterol‚ fatty acids
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Elaine N. Marieb Katja Hoehn CHAPTER PowerPoint® Lecture Slides prepared by Vince Austin‚ Bluegrass Technical and Community College Human Anatomy & Physiology SEVENTH EDITION Cells: The Living Units 3 P ART A Copyright © 2006 Pearson Education‚ Inc.‚ publishing as Benjamin Cummings But First… Let’s clean up… Hydrophobic Hydrophilic Copyright © 2006 Pearson Education‚ Inc.‚ publishing as Benjamin Cummings Plasma Membrane Separates intracellular fluids from extracellular
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