Comparing Mitosis and Meiosis Observe: 1. Organisms have a number of chromosomes in each of their body or somatic cells that is unique for that organism. This is called their diploid or 2n number. 2. Cells go through a cell cycle‚ whereby‚ much of the cycle does not include division‚ but at the end of this interphase in their cycle‚ they go through mitosis. 3. Cells replicate their DNA in the S phase of the cell cycle. 4. In the process of mitosis‚ cells replicate their DNA in the nucleus‚ form
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milliliters expressed sometimes on a scale of 0 to 100 with an average normal value (as 15 grams) taken as 100‚ and that is determined in blood either colorimetrically or by quantitative estimation of the iron present Autosome- any chromosome other than a sex chromosome. Chromosome- any of several threadlike bodies‚ consisting of chromatin‚ that carrythe genes in a linear order: the human species has 23 pairs‚designated 1 to
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you should try to put answers in your own words‚ maintaining accuracy and the proper use of terminology‚ rather than blindly copying the textbook whenever possible. • • • Mendelian inheritance has its physical basis in the behavior of chromosomes [2]. 1. What is the ‘chromosomal theory of inheritance’? 2. a. IN YOUR OWN WORDS‚ explain what is demonstrated in 15.2 on page 287 in reference to the law of segregation. [3] b. Use two different colored pencils to illustrate the segregation
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POINTS PRINCIPLES OF INHERITANCE Human DNA is organized into 46 chromosomes (23 pairs). Paired chromosomes look similar under the microscope but differ in DNA sequence. One member of each pair is inherited from the mother‚ and the other from the father. Twenty-two pairs of chromosomes are autosomes. The remaining pair‚ the sex chromosomes‚ confers maleness (XY) or femaleness (XX). During meiotic cell division‚ the chromosomes are distributed to daughter cells. Meiosis results in four daughter
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2. Chromosomes are formed when the chromatin threads coil and then condense‚ and these chromosomes are two identical chromatids bound together by a centromere. 2. What is the main occurrence involving the chromosomes during anaphase? The main occurrence involving the chromosomes during the anaphase is known as the splitting apart of the centromere of the chromatids splitting to create a single chromosome which possess a single
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ethnicities. (http://www.huntington-study-group.org). Huntington’s disease is the result of a single mutated gene. Since Huntington’s disease is autosomal dominant‚ the gene is on an autosomal chromosome‚ and recently has been localized on the fourth autosomal chromosome pair. Any chromosome not considered as a sex chromosome‚ or is not involved in sex determination. It occurs in pairs in somatic cells and singly in sex cells (gametes) (An affected parent passes either the HD gene‚ or the other working gene
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BI 111 Study Guide Exam #1: Some of Ch. 4‚ the brief discussion summarizing Ch. 6‚ and Chptrs. 5‚ 7‚ and 8 HOW TO USE THIS STUDY GUIDE: You should be able to provide fairly detailed answers to the following questions and directions… this means you will probably use more room than is provided by the small spaces between them. Some of those answers will include things I talked about in lecture‚ as well as concepts that are explained by your textbook. You may want to reformat the guide on
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Ch. 18. viral and bacterial genetics Virus Not living‚ nucleic acids and proteins Viriods and prions Viriods: Single stranded circular Rna Prions: only protein Bacteria Living‚ prokaryotes 1 Seven characteristics common to life Cells and organization Energy use Respond to environmental change Regulation and homeostasis Growth and development Reproduction Change over the course of generations 2 Viruses Over 4‚000 different types of viruses Virus have their
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non-inherited chromosomal condition that only occurs in females. It’s cause when there is a complete or partial absence of the second x chromosome. A person with TS has monosomy X‚ which means that it only has one pair of X chromosome on all or some of it’s cells. When it’s only in some cells is called mosaicism. If a women has this syndrome and it’s a prime mover x-chromosome mosaicism. she is known for having a mosaic turner syndrome. A person with TS is missing one copy of the gene SHOX‚ which leads
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prophase: chromosomes condense metatphase: line up on eqator anaphase: pull apart telephases: nuclear membrane forming. 2 daughter cells 46 chromosomes in parent cell‚ > 2 daughter cells (46 chromosome each) Interphase= cell grows‚ DNA duplicates chromosomes‚ cell prepares for division Meiosis 1 parent cell > 4 daughter cells (23 chromosomes each) gametes= sperm/egg zygote= when sperm and egg meet ( end up with 46 chromosomes) prophase 1
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