cognitive impairment.The genetic disorder Down Syndrome is caused when abnormal cell division results in extra genetic material from chromosome 21. The most common form of Down syndrome is known as trisomy 21, a condition where individuals have 47 chromosomes in each cell instead of 46.This extra genetic material causes the developmental changes and physical features of Down Syndrome.Humans usually have 46 chromosomes in every cell, with 23 inherited from each parent. It's the most common genetic chromosomal
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color the eyes are, what color the hair is, and also what gender you are when a baby. DNA is found in the nucleus of almost all cells. DNA also does something called replicating nucleotides. If DNA never replicated, cell life would be impossible. If this really were to happen, the cells would then die. DNA replicates itself in order to create more DNA strands for cells. It happens along the entire DNA molecule. It continues this until the entire strand/ladder
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| Protists and Fungi | BIO 108-02 | | Zahraa Alaloosi | 3/21/2016 | Page 43 3. The form of diatoms are most likely pennate. Around 90 % of the slide is pennate and a few only are centric. Page 45 Brown Algae: NAME | BODY FORM | CHARACTERISTICS | PADINA GYMNOSPORA | Fan shaped plant body, | Light brown, Reproductive bodies forming wider and somewhat narrower alternating rows | DICTYOTA DICHOTOMA | Plant ribbon like, bushy, | Yellowish brown, the reproductive structures scattered
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www.asbiology101.wordpress.com An introduction to the microscope and magnification MAGNIFICATION AND RESOLUTION Because cells are too small to be seen with the naked eye, the light microscope was developed to produce enlarged and more detailed images of cells. The magnification of an image is how much bigger it appears under the microscope than it is in real life, and is worked out using the following formula: magnification = image size ÷ actual size unit metre decimetre centimetre
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THE MICROSCOPE Much of the laboratory work in General Botany I involves the study of minute structures which are invisible of poorly seen with the naked eye. This requires the use of the microscope, the primary purpose of which is to magnify or greatly enlarge the image of the objects or organisms so their detailed structures may be studied. For our purposes, the monocular compound microscope will be used. It is an optical instrument with two lens systems: the objectives and the eyepiece or ocular
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INSTRUCTIONAL SHEET FOR STUDENTS PROPAGATION BY AIR-LAYERING OBJECTIVES Students should be able to: ❖ Demonstrated the steps involved in Air-layering propagation. ❖ Explain the reason for using rooting hormone and scraping of cambium layer on stem. NOTES PROPAGATION BY AIR LAYERING Air layering or marcotting is a form of asexual plant propagation. This is a form of propagation that involves the use of plant parts, other than seeds to produce new plants
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The paper covers the screening and treatment for diabetes and what methods are used to prevent it development. The paper also contains information regarding In Vitro Fertilization (IVF) and its benefits for individuals and families. The use stems cells and its advantages and disadvantages are also mentioned. Analyze the benefits and limitations of genetic and reproductive sciences for individuals, families, and society. The benefit of genetic science for individuals is that it can determine if
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003 Chapter 03 Cell Biology and Genetics Student: ___________________________________________________________________________ 1. The structural and functional unit of all living organisms is the A. ribosome. B. cell. C. organ. D. organelle. E. plasma membrane. 2. All of the chemical reactions within a cell are known as cell A. reproduction. B. metabolism. C. communication. D. inheritance. E. movement. 3. Cells produce and respond to chemical and electrical signals as a means of A. communicating
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Chapter 12: The Cell Cycle Reading guide Overview: 1. What are the three key roles of cell division? State each role, and give an example. 2. What is meant by the cell cycle? Concept 12.1 Cell division results in genetically identical daughter cells 3. What is the meaning of genome? Compare your genome to that of a prokaryotic cell. 4. How many chromosomes are in a human somatic cell? 5. Name two types of somatic cells in your body. 6. What is a gamete? 7. Name the
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Basic Techniques for Propagating Plants Many types of plants in and around the home can easily be propagated using fairly simple, inexpensive procedures. Today’s demonstration will highlight a few of the basic and most widely applicable techniques for vegetative propagation of plants. Some of these techniques can be used for houseplants, annual flowers, and bedding plants, whereas other techniques are more effective for woody ornamental trees and shrubs, ground covers, and vines. There are many
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