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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Observing Mitosis and Meiosis on Cell Specimens Name: Low Celine Tables of Content…………………………………………………………………………….ii List of Illustrations…………………………………………………………………………… iii Synopsis………………………………………………………………………………………. iv 1. Objectives of Experiment………………………………………………………………… 1 2. Introduction……………………………………………………………………………….1 3. Theory…………………………………………………………………………………….. 2 4. Procedures………………………………………………………………………………... 3 5.1 Preparation of Onion Root
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Victoria Haskins Biology Honors Mr. Kelly March 6th‚ 2017 Edwards Syndrome Edwards syndrome‚ also known as Trisomy 18‚ is a condition caused by a mistake in meiotic cell division resulting in an extra chromosome 18 in a developing baby (Source 1). This condition disrupts normal development‚ potentially fatally‚ even before birth (Source 1). Major characteristics of the disorder include a delay in growth‚ a low birth weight‚ and other major medical complications (Source 1‚ Source 3). Professor of
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4.1.1 State that eukaryotic chromosomes are made of DNA and proteins 4.1.2 Define gene‚ allele and genome Gene: | Heritable factors that control specific characteristics | Allele: | One specific form of a gene (differing form other alleles by one or few bases‚ occupying the same gene locus as other alleles of that gene) | Genome: | Whole genetic information of the organism | Chromosomes are made of DNA and protein 4.1.3 Define gene mutation * Gene mutation is the change in the base
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specifically our chromosomes. Many times‚ parents inadvertently pass genes on to their children through their DNA that may contribute to developmental disorders such as Down Syndrome. In this paper‚ I will explain the role of genetics and how it plays a part in development. I will also explain how the genes of two parents can influence the traits and characteristics of their offspring. Every person has genes and chromosomes located in every cell of their body. Those genes and chromosomes are what make
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also affects how many chromosomes that each mother cell has. Somatic cells can have either a haploid or diploid of chromosomes. The number of chromosomes in the mother cell are duplicated in the new daughter cells‚ so both mother cell and daughter cell have an equal number of chromosomes. Meiosis’ gamete cells are found only with a diploid of chromosomes. The mother cell will then divide leaving its four daughter cells with a haploid of chromosomes. This is because the chromosomes of a female and male
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telophase‚ prophase. D. telophase‚ prophase‚ anaphse‚ metaphase. _______13. Chromosomes are replicated (copied) during: A. mitosis. B. cytokinesis. C. S phase. D. G1 phase. _______14. Chromatin condenses into chromosomes during: A. prophase. B.
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18-20 hours. Mitosis 1. Interphase- Chromosomes are copied Chromosomes appear as threadlike coils (chromatin) at the start‚ but each chromosome and its copy (sister chromosome) change to sistr chromatids at the end of this phase. 2. Prophase- Mitosis begins (cell begins to divide) Centrioles (or poles) appear and begin to move to the opposite ends of the cell Spindle fibers form between the poles 3. Metaphase- Chromatids (or pairs of chromosomes) attach to the spindle fibers 4. Anaphase-
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Extrachromosomal Inheritance: n. Inheritance of traits through DNA that is not connected with the chromosomes but rather to DNA from organelles in the cell. Also called cytoplasmic inheritance. Essay on “Cytoplasmic Inheritance” Inheritance of characters from parents to offspring is primarily dependant on the nucleus. Oscar‚ Her twig etc.‚ had established in 1870 itself the importance of nucleus in the hereditary transmission of characters. The discoveries of Mendel further provided the genetic
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called chromosomes. “A chromosome is a long strand of DNA (deoxyribonucleic acid) that has bundled itself together in order to replicate” (Chromosomes‚ 2006). Within the nucleus of a human cell there are 46 chromosomes‚ or 23 pair. This means there are 23 chromosomes within the egg and another 23 within the sperm. One pair out of the 23 is called the sex chromosome‚ the rest are called autosomes. The sex chromosome determines whether an individual is male or female. So far‚ we have chromosomes that
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