in homologous pairs. When does it happen?Meiosis * Chromosomes that are the same size and function are called what?Homologous chromosomes * The process of forming sperm in humans is termed what? Egg production? Spermatogenesis and egg is oogenesis. GENETICS * What is a genome? Complete set of genetic material in an organism * What is an autosome? How many pairs of autosomes are present in humans?Autosomes are not sex chromosomes and have 22 chromosomes * What are X-linked genes
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Unit 3 Growth & Heredity Exam Review & Study Guide WHAT SHOULD I KNOW ABOUT… DNA STRUCTURE‚ DNA REPLICATION‚ Tx‚ Tl‚ MUTATIONS‚ CELL CYCLE‚ MITOSIS‚ MEIOSIS‚ MENDELIAN GENETICS Review/Use the following: Vocab lists‚ ISN Pages‚ Practice Questions‚ Lectures‚ Book Chapters 12‚ 9‚ 10 DNA STRUCTURE 1. What role did Rosalyn Franklin play in our understanding of DNA’s structure? She discovered the double-helix position of the DNA. 2. What role did James Watson & Francis Crick play in our understanding
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contributing half of the genetic makeup of their offspring via sex cells or gametes. Gametes produced by the male parent through Spermatogenesis process are called spermatozoa (commonly called sperm cells) and gametes produced by females through Oogenesis process are called oocytes (commonly referred to as ova or eggs). As gametes are formed‚ the 46 chromosomes from each parent cell (23 pairs of chromosomes) are divided through meiosis so that each gamete is haploid‚ having only 23 unpaired chromosomes
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“The cells in your body are tiny-a row of about forty would fit into 1mm. But although they are too small to see with the naked eye their complexity is remarkable. A single cell can be thought of as an organised chemical system‚ separated from its disorganised surroundings by a membrane” (Boyle et al 1999) First here is a brief summary of major eukaryotic organelles and their structures. The nucleus is the largest and most prominent organelle in the cell. It is usually spherical and about 10um in
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excess cytoplasm is now consumed by endocytosis from the surrounding sertoli cells in the testes. The mature spermatozoon is now suspended in the lumen‚ it will then break away and float down the tube towards the epididymis for storage. Oogenesis Oogenesis is the production of the female gametes otherwise known as the Ova or Egg. This process begins in the ovaries before birth. Before Birth Oogonia are made by mitotic division of the primordial germ cell. As a result
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Pregnancy is the fertilization and development of one or more offspring‚ known as an embryo or fetus‚ in a woman’s uterus. It is the common name for gestation in humans. A multiple pregnancy involves more than one embryo or fetus in a single pregnancy‚ such as with twins. Childbirth usually occurs about 38 weeks after conception; in women who have a menstrual cycle length of four weeks‚ this is approximately 40 weeks from the start of the last normal menstrual period (LNMP). Human pregnancy is the
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INTRODUCTION TO SCIENTIFIC TERMINOLOGY The purpose of this document is to introduce root words and their definitions. These words play a vital role in Biology because many scientific terms are based on these words. Because these root words are Greek or Latin in origin‚ their meanings have remained consistent throughout time. By becoming familiar with root words and their definitions you can determine general meanings of many terms by simply applying these root word definitions. For example‚ the
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11. What is the structure of a DNA molecule? a. What forms the backbone of the DNA molecule? b. What kind of bonds occur between the 3’ OH on the 3’ C of one nucleotide and the phosphate of the next? b. What forms the “steps of the ladder”? c. What kind of bonds hold the nitrogen bases together? d. What is meant by anti-parallel strands? 12. What is Chargaff’s rule (what binds with what?) 13. How does DNA fold into a chromosome? (the 6 steps) 14. What is a nucleosome? 15. What are
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Anatomy of the Female Reproductive System The reproductive role of the female is far more complex than that of a male. Not only must she produce gametes‚ but her body must prepare to nurture a developing embryo for a period of approximately nine months. Ovaries‚ the female gonads‚ are the primary reproductive organs of a female‚ and like the male testes‚ ovaries serve a dual purpose: They produce the female gametes (ova) and sex hormones‚ the estrogens * and progesterone (pro-ges′tĕ-rōn). The
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Introduction The topic I chose to research was Polycystic Ovary Syndrome. Polycystic is a health problem that can affect a women’s menstrual cycle‚ childbearing‚ hormones‚ and other bodily functions. Women with this disorder typically have higher levels of androgens in their bodies. [ (DePaolo‚ 2007) ] In this paper I will first do an overview of the female reproductive system‚ briefly discus the menstrual and ovarian cycle and finally discuss Polycystic Ovary Syndrome. Overview of Female Reproductive
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