Reproduction is the biological process by which new individual organisms – "offspring" – are produced from their "parents". Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. There are two forms of reproduction: asexual and sexual. In asexual reproduction‚ an organism can reproduce without the involvement of another organism. Asexual reproduction is not limited to single-celled organisms. The cloning of an organism is a form of
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7/6/2011 CELL DIVISION CHAPTER 3: CELL DIVISION 3.1 THE CONCEPT OF CELL DIVISION 3.2 THE CELL CYCLE 3.3 MITOSIS 3.4 MEIOSIS Related to the theory of cells Rudolph virchow ; 1855 stated; „Omnis cellula e cellula‟ Every cell is from a cell or “All new cells are derived from other cells” A cell (daughter cell) is originated from another cell ( ) through . In cell division‚ is inherited from one generation to the next. Involve the distribution of genetic material (DNA) to each daughter
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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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Safety/Science Foundations 1. Avoid the situation; don’t touch 2. Close-toed shoes 3. Students 4. To protect your eyes from chemicals 5. Before starting the lab 6. Students should not play around and follow directions. Students should clean up after their selves after finishing a lab. 7. Hypothesis - a testable explanation for an observation 8. Observation - statement made using senses. ex. I hear chirping Inference - interpretation from observations. ex. "The chirping is from the bird"
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sought to identify males having an extra chromosome. The result is 1 in 500 to 1000 newborn males have the XXY chromosome arrangement. Klinefelter disorder is a genetic condition but it is not inherited from parents. It usually happens randomly during meiosis; specifically chromosomes can’t
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Chapter 13—Chromosomal Rearrangements and Changes in Chromosome Number Reshape Eukaryote Genomes Fill in the Blank |1. |Events that reshape genomes by reorganizing the DNA sequences within one or more chromosomes are known as ____________________. | |Ans: |rearrangements | | |Difficulty: 2
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Natural History Society. The results of Mendel’s work were published in 1866 as "Experiments with Plant Hybrids" in the society’s journal. Mendel’s Law of Segregation stated that the members of a pair of homologous chromosomes segregate during meiosis and is distributed to different gametes. This hypothesis can be divided into four main ideas. The first idea is that alternative versions of genes account for variations in inherited characters. Different alleles will create different variations
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affected do not have families with long histories of Cri du Chat. Additionally‚ the syndrome occurs within people of every different ethnicity. The deletion of the 5p- chromosome usually happens randomly during meiosis or in early embryonic development. In the case of an error during meiosis‚ failed translocation between nonhomologous chromosomes can cause the deletion of the 5p- chromosome section. On average‚ Cri du Chat Syndrome appears in 1 out of between 20‚000 and 50‚000 children. Fortunately
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chromosome by a centromere. In the initial division of meiosis the homologous chromosomes line up in matching pairs and one of each pair of homologous chromosomes moves into a new cell. Next the duplicated chromosomes separate to single strands resulting in four sex cells that are haploid‚ (ie contain half the chromosome number of the original cell). The genes are located on the chromosomes. They are duplicated during the first stage of meiosis and are then randomly assorted depending on which chromosomes
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Advanced Biology Final Exam / Fall 2011 Short Answer 1. Which of the following is a false statement regarding deoxyribonucleic acid (DNA)? 2. Which of the following properties or processes do we associate with living things? 3. Which component is not directly involved in translation? 4. The anticodon of a particular tRNA molecule is 5. Which of the following types of mutation‚ resulting in an error in the mRNA just after the AUG start of translation‚ is likely to have the
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