Section 1: Binary fission‚ mitosis‚ & meiosis Reading: Chapter 7 Watch and Learn: Mitosis http://www.youtube.com/watch?v=1cVZBV9tD-A&feature=share&list=UUEik-U3T6u6JA0XiHLbNbOw Meiosis http://www.youtube.com/watch?v=rB_8dTuh73c&feature=share&list=UUEik-U3T6u6JA0XiHLbNbOw Basic Learning objectives After completing the readings and practice exercises‚ students should be able to: Describe the process of binary fission. Describe the features and components of eukaryotic chromosomes and sister
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gametes by mitosis. Two gametes (originating from different organisms of the same species or from the same organism) combine to produce a zygote‚ which develops into a diploid plant of the sporophyte generation. This sporophyte produces spores by meiosis‚ which germinate and develop into a gametophyte of the next generation. This cycle‚ from gametophyte to gametophyte‚ is the way in which plants and many algae undergo sexual reproduction. Nontracheophyte plants including the liverworts‚ hornworts
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section 30 October 2012 Sordaria Lab Meiosis and genetic diversity in the model organism‚ Sordaria Introduction Meiosis is a process in which a cell divides to form four haploid (1N) cells. The Sordaria lab is a perfect way to see an example of how meiosis impacts the life of an organism. Meiosis can be broken down into parts that contain a few stages. These stages are similar to that in Mitosis (Prophase‚ Metaphase‚ Anaphase‚ and telaphase.) during Meiosis I‚ crossing over and independent assortment
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Human Biology Stage 2B Revision – Test 1 Chapter 10 – Production of Gametes Gonads: Are the primary sex organs Secondary sex organs: Everything else‚ e.g. Seminal Vesicles Males Spermatozoa (sperm): Male gametes Scrotum: Single pouch of skin‚ divided into two sacs internally Lobules: Compartments filled with fine tubes called seminiferous tubules Seminiferous tubules: Fine tubes lined with cells that produce the male gametes. They eventually join together to form a short straight tubule
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form mature haploid gametes. There are two forms of gametogenesis‚ spermatogenesis (male)‚ and oogenesis (female). “Meiosis and gametogenesis are critical processes in the transmission of genetic material to subsequent generations during sexual reproduction”(Frederic 8346). In other words‚ gametogenesis is the production of sperm and eggs‚ through the process of meiosis. “During meiosis‚ two cell divisions separate the paired chromosomes in the nucleus and then separate the chromatids that were made
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reaction- reactants and products Calvin Cycle- reactants and products Cellular Respiration chemical equation Structure of a mitochondria Glycolysis Krebs Cycle Electron Transport Chain Fermentation- Lactic acid and Alcoholic Unit 5- Mitosis and Meiosis (ch. 9‚ 10.1) The Cell Cycle- Interphase‚ Mitosis‚ and Cytokinesis Stages
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* Question 1 | | | The period of time when secondary sexual characteristics begin to develop and the potential for sexual reproduction is reached is called [a] . The first menses is called [b] ‚ and the permanent cessation of menses is called [c] | | | | | | | | | | | Correct Answers for: a | puberty | Correct Answers for: b | menarche | Correct Answers for: c | menopause | | | | | * Question 2 | | | Spermatogenesis does not occur at normal core body
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Introduction: To achieve genetic experiments with haploid organisms‚ genetic strains of different genotypes must be crossed from one another. Following fertilization and meiosis‚ the meiotic products can be analyzed as the ascomycete fungus‚ Sordaria fimicola. Sordaria can be used as a model to study meiotic segregation. The trait followed was the ascospore color. Ascospore color is a single gene trait therefore it is easily observed under a light microspore. Which allele is dominant is very tough
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Mendel’s principles of inheritance in that it shows how chromosome pairs from prophase of meiosis-1 split and migrate to opposite poles and then into separate gametes. Also‚ this splitting of chromosomes occurred apart from the splitting of the other chromosomes in that cell. 4. Recombination involves the rearrangement of genes by random chromosome assortment and crossing over with occurs during meiosis. Mutations‚ however‚ are unprecedented changes in genes which gives rise to entirely new forms
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Biology form 4 – Chapter 5 Mitosis Mitosis is a division of the nucleus to produce two new daughter cells containing chromosomes identical to the parent cell. Significance of mitosis Growth- allows a zygote to produce more cell in order to grow Repair and replacement- allow the multicellular organism maintain its tissues‚ example skin cells and blood Asexual reproduction- clone The cell cycle divided into two major phases a. Interphase b. Mitosis Interphase is the period between division‚ divided
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