monozygous twins remain discordant. According to the University of Maryland Medical Centre‚ one monozygous twin only has a 33% chance of developing type 1 diabetes if the other twin does. * monozygous twins are two children who develop from the same zygote(egg) and therefore have exactly the same genetic makeup. If one twin developes diabetes and the other doesn’t then other factors apart from genetics must be important. Sympoms There are three major symptoms
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The aim of the female reproductive system is to produce mature oocytes which match with the male spermatocyte to create offspring. Fertilisation most commonly occurs in the fallopian tubes‚ though this can also occur later in a female’s menstrual cycle if the egg has already moved down into the uterus‚ though there is a higher chance of miscarriage as the lining of the womb may continue to shed. The external female reproduction features have two functions; to allow insemination and to also protect
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Nevid‚ J.S.‚ and Fichner-Rathus‚ L. 2005). From the moment sperm fertilized an ovum‚ our destiny to be a girl or a boy is chosen. Usually at this point; 23 chromosomes from the male donor and 23 from the female come together and combine to make a “zygote”. Starting about six weeks into the pregnancy‚ our bodies began to form and create into what they are meant to be‚ and after the seventh week‚ our genetic code (XY or XX) begins to really assert itself. Gender identity is not always a term referring
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Harnessing of Solar Energy: Photosynthesis versus Semiconductor Based Solar Cell Photosynthesis and semiconductor-based solar cells are both used to harness solar energy from the sun – photosynthesis for plants and semiconductor based solar cells for human beings. Photosynthesis consists of light reactions and dark reactions. It is a process in which carbon dioxide (CO2)‚ water (H2O) and light energy are utilized to synthesize an energy-rich carbohydrate like glucose (C6H12O6) and to produce
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Babies From a helpless newborn to an active toddler: It takes just 12 short months for a baby to undergo an incredible transformation. Babies grow and change at an amazing pace‚ and every month there are new and exciting developments happening. Do you know how babies are made? We all got the basics covered. A man and woman meet‚ they have sex‚ and nine months later‚ a baby is born. But there’s a lot more to it than that. For this processes to begin there is a few things that need to happen. For
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Unit 3 Lecture Study Guide 1. List the 4 primary tissue types and give the general characteristics and functions of each one. Epithelium- The epithelium protects us from the outside world. Skin‚ absorbs. Stomach and intestinal lining‚ filters. The kidney‚ secretes. Forming of glands‚ closely attached to each other forming a protective barrier‚ always has one free surface open to outside the body or inside an internal organ‚ has no blood vessels but can soak up nutrients from blood vessels in connective
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saclike form called asci (singular - ascus). Inside the asci‚ karyogamy occurs and combines the two parental genomes‚ and then meiosis forms genetically diverse ascospores. Eight ascospores can be found lined up in a row in the asci; they form a single zygote‚ which is diploid.
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there has been a continuous ethical and legal debate regarding the topic of intentional abortion. This debate focuses mostly on when life begins. Within the debate‚ there are individuals called anti-abortionists that believe human life begins at a zygote and aborting this unicellular mass is both legally homicidal and morally unethical. The opposite‚ an abortionist’s argument‚ is that life does not begin until birth of the baby and therefore abortion is both ethical and legal (Gordon‚ n.d.). This
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When a baby is first conceived it is genderless for the first seven weeks of development and‚ since there is no gender‚ the development for males and females during this period is identical. At seven weeks when the sperm and egg combine to form the zygote‚ the genes activate the babies’ biological sex. Everyone has 23 pairs of chromosomes and the 23rd pair is made up of the sex chromosomes that determine biological sex. The baby will be given two different sex chromosomes an X from the
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UNIVERSITY OF NAIROBI SCHOOL OF ECONOMICS INTRODUCTION TO PSYCHOLOGY PRESENTED BY: NJUE ANGELINE WANJA X74/53648/2012 PRESENTED TO: PROFESSOR GATUMU 1. MAKE A DISTINCTION BETWEEN NATURE AND NURTURE Nature is the inherent character or basic constitution of a person or thing while nurture is the sum of the environmental factors influencing the behavior and traits expressed by an organism. 2.IDENTIFY THE RECOGNISED EFFECTS OF NATURE AND NURTURE ON BEHAVIOUR AND DISCUSS THE MAJOR ISSUE CONCERNING
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