ASEXUAL REPRODUCTION Asexual reproduction is a mode of reproduction by which offspring arise from a single parent‚ and inherit the genes of that parent only; it is reproduction which does not involve meiosis‚ ploidy reduction‚ or fertilization. The offspring will be exact genetic copies of the parent. A more stringent definition is agamogenesis which is reproduction without the fusion of gametes. Asexual reproduction is the primary form of reproduction for single-celled organisms such as the archaea
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Cellular Reproduction Cellular Reproduction is the process by which all living things produce new organisms similar or identical to themselves. This has to happen because if a species were not able to reproduce‚ that species would quickly become extinct. Reproduction consists of a basic pattern: the conversion by a parent organism of raw materials into offspring or cells that will later develop into offspring. The reproductive process‚ whether asexual or sexual always involves an exchange
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* NCERT 1. Reproduction in Organisms INTRODUCTION Biology in essence is the story of life on earth. While individual organisms die without fail‚ species continue to live through millions of years unless threatened by natural or anthropogenic extinction. Reproduction becomes a vital process without which species cannot survive for long. Each individual leaves its progeny by asexual or sexual means. Sexual mode of reproduction enables creation of new variants‚ so that survival advantage is enhanced
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Q1. Why is reproduction necessary in living organisms? If organisms don’t reproduce‚ then after their death‚ there would be no organisms left of their species. Thus their species would perish. Q2. Differentiate between Sexual and Asexual reproduction. |Sexual Reproduction |Asexual reproduction | |1. It is characterized by the fusion of two cells (Gametes) usually coming from
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Cell Reproduction Dr. Susan Kennedy Introduction to Biology January 28‚ 2012 Introduction Cellular reproduction is the process by which cells duplicate their contents and then divide to yield two cells with similar‚ if not duplicate contents. Life as we know it depends on the ability of cells to store‚ retrieve and translate the genetic instructions required to make and maintain a living organism. In this assignment‚ I will discuss two different types of cell reproduction
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HUMAN REPRODUCTION PROCESS SEXUAL INTERCOURSE During this process‚ the erect penis of the male is inserted into the female’s vagina‚ and then either partner initiates rhythmic pelvic thrusts until the male ejaculates semen‚ which contains sperm‚ into the vaginal canal. PREGNANCY This is the time that fetus develops‚ dividing via mitosis inside the female. BIRTH which begins with the fetus being pushed out of the birthing canal. The newborn‚ which is called an Infant should typically begin respiration on
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Reproduction in humans Reproduction Reproduction is a characteristic of all living organisms. It is the process that makes more of the same kind of organism. Reproduction is essential in all species to ensure that the species does not extinct. There are two types of reproduction‚ Asexual and sexual reproduction. Asexual Reproduction: Asexual means not sexual. This means that this kind of reproduction does not involve sex. Asexual reproduction is the production of genetically identical offspring from
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Plants have two different ways to reproduce. The first one is vegetative reproduction. With this type all the plants that have the same parent have the same genetic make-up. This also lets plants pass adaptations on that they have abtained over the years. Plants with good genetic make-up usually spread quickly and take over an area. An example of this would be the dandelion. These plants can sprout from any part of the plant. An example of this is the potato‚ farmers will pick the potatoes and cut
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CLASS : 3 PINTAR NO I/C : 980811- 06- 5112 TEACHER’S NAME : PUAN NOOR AZUIN BT ABD JALIL VEGETATIVE REPRODUCTION * Vegetative reproduction is the production of new plant using any part of a plant except the seeds. * Vegetative reproduction is a form of asexual reproduction since no gametes are used. * 8 types of vegetative reproduction : * Runners / stolons * Rhizomes * Corms * Bulbs * Leaves * Suckers * Stem tubers * Stem
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The main connection between the Terran and the Tlic is the birthing process. The Tlic use the Terran to carry their grubs for them‚ because the Tlic are not able to carry their children themselves. The author uses her story to examine and explore reproduction rights that were being debated or taking place during the time she was writing. Some examples of these rights are exhibited in the incidents of abortion‚ rape‚ and surrogate parenthood. These issues that are present in the story are important because
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