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Intro to Genetics PowerPoint Notes
Intro to Genetics PowerPoint Notes

... B. Codominance: a genetic cross where __________ alleles show up in the _______________________ for the organism ...
Human Genetics - Northwest Allen County Schools
Human Genetics - Northwest Allen County Schools

... nucleus called a Barr body. This phenomenon can cause interesting traits like the calico color pattern in cats. The genes for the black and orange color are on the X chromosome. ...
File
File

... pairs lay the 30,000 or so genes that make up a human.  We got our genes from our parents. They produced sex cells (gametes) with a half set of information (haploid) in a process called Meiosis.  During meiosis genetic information is doubled, then split, then split to form a gamete. Each gamete ha ...
Cell division and Survival
Cell division and Survival

... n for humans is therefore 23. Every d____________ cell in a human has 46 ch_____________. Gorillas have two sets of 24 chromosomes (n= 24) so every gorilla body cell has 48 chromosomes. The diploid cell d_________ by M_________ to form g___________ that contain only o______ set of ch_____________. T ...
Genetics - Georgia Highlands College
Genetics - Georgia Highlands College

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Genetics - I Heart Science
Genetics - I Heart Science

... Example – a brown and a blue (Bb) BUT….which of the two traits will be ...
Mitosis and meiosis are similar processes in that they both result in
Mitosis and meiosis are similar processes in that they both result in

... bacteria, this process results in an entirely new, independent organism. This is classified as asexual reproduction because it does not require sex for the creation of new organisms. In multi-cellular organisms, like ourselves, mitosis only occurs in somatic cells, which comprise all cells in an org ...
Bio 230 Notes Fusun Dikengil 1 Traditional Hypothesis Luca
Bio 230 Notes Fusun Dikengil 1 Traditional Hypothesis Luca

... prokaryotic cells that joined together in a symbiotic union. In fact, the mitochondrion itself seems to be the "great-great-great-great-great-great-great-great-great granddaughter" of a free-living bacterium that was engulfed by another cell, perhaps as a meal, and ended up staying as a sort of perm ...
Jan11
Jan11

... The haploid chromosome number in honey bees is 16. Male honey bees are haploid while females are diploid. A single cell isolated from a bee’s body was found to have 32 double-stranded DNA molecules. Was the cell from a male, a female, or is it not possible to make a definite conclusion from the info ...
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29 - Karmayog .org

... The young ofspring (you and your siblings) resemble your parents. This is because the instruction in the DNA has been carried out and passed on to you. You will pass them on to your children. Humans have 46 chromosomes in every cell except the sperm and the egg, these have 23 chromosomes, the 23rd c ...
Biology-Chapter6-7 (Biology-Chapter6-7)
Biology-Chapter6-7 (Biology-Chapter6-7)

... 1. Genetics is the study of A. bacteria. B. evolution. C. heredity. D. reproduction. 2. Which shows the correct sequence of events in reproduction? A. gamete formation, zygote formation, fertilization B. fertilization, gamete formation, zygote formation C. gamete formation, fertilization, zygote for ...
Independent Assortment of Chromosomes
Independent Assortment of Chromosomes

... • Mutations (changes in an organism’s DNA) are the original source of genetic diversity • Mutations are what created different versions of genes called alleles • Reshuffling of alleles during sexual reproduction produces genetic variation ...
Ch 11- Introduction to Genetics
Ch 11- Introduction to Genetics

... Alleles of different genes tend to be inherited together from one generation to the next when those genes are located on the same chromosome. Genes that are far apart assort independently, genes that are linked are on the same chromosome. Genes that are close together on a chromosome are NOT likely ...
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IV. Diagnosing Gene Disorders

...  Fetal blood sampling – needle is used to remove cells from the fetus to test for ____________ disorders. V. Preventing Genetic Disorders A. Blood Test  Simple blood test in males and females can screen for more than __________ genetic mutations  Approximately ________ and the results are availab ...
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... Alleles differ from each other by one or only a few bases New alleles are formed by mutation The genome is the whole of the genetic information of an organism The entire base sequence of human genes was sequenced in the Human Genome Project Sickle cell anemia can be caused by a base substitution mut ...
Meiosis packet
Meiosis packet

... Despite the similarity in their names, meiosis is different from mitosis because they have exactly opposite jobs. Mitotic cell division insures that cells are genetically the same, and Meiotic division produces cells that are genetically different. In other words, Mitosis guarantees continuity (cont ...
Meiosis Information Sheet
Meiosis Information Sheet

... Despite the similarity in their names, meiosis is different from mitosis because they have exactly opposite jobs. Mitotic cell division insures that cells are genetically the same, and Meiotic division produces cells that are genetically different. In other words, Mitosis guarantees continuity (cont ...
Ch. 15 Chromosomal Inheritance
Ch. 15 Chromosomal Inheritance

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Sources of Genetic Variation - University of Evansville Faculty Web
Sources of Genetic Variation - University of Evansville Faculty Web

... chromosomes do not separate during meiosis I or sister chromatids fail to separate during anaphase of meiosis II ...
3.1 Chromosome Number in Different Species
3.1 Chromosome Number in Different Species

... Breeding between the two species produces an allodiploid F1 generation in which 2n = 18 (but actually is 9 + 9, since the chromosomes are not homologous). But if somatic doubling (i.e. nondisjunction) occurs in a meristematic cell. Result: 2n = 36. In effect, each parental chromosome set has "create ...
Cross-dressing or Crossing-over: Sex Testing of Women Athletes
Cross-dressing or Crossing-over: Sex Testing of Women Athletes

... What is true after Meiosis I? A: Four cells have been produced. B: The cells are haploid. C: The DNA will be replicated once more. D: The cells are ready to perform as gametes. E: Each chromosome consists of a single strand of DNA. ...
Chapter 3 Section 1
Chapter 3 Section 1

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cell division - Alvinisd.net
cell division - Alvinisd.net

... Asexual Reproduction – a single parent produces one or more identical offspring by dividing into two cells - mitosis (protists, arthropods, bacteria by binary fission, fungi, plants); produces large numbers of offspring - offspring are clones of parents (genetically identical) - common in unicellula ...
TCSS Genetics Study Guide
TCSS Genetics Study Guide

... 9. Identify characteristics that you are likely to inherit from a parent and characteristics that you are least likely to inherit from a parent. (S7L3a) 10. The drawing to the right represents a pair of chromosomes. The area labeled “bands” shows the location of what? (S7L3a) 11. Explain how a perso ...
Multiple Choice Questions – Answers
Multiple Choice Questions – Answers

... cells. Mitotic division results in daughter cells containing a full number of genes as the parent cell they came from. 5. The type of cell division that occurs in the gamete cells is known as: A Cytosis B Meiosis [True] C Osmosis D Mitosis The correct answer is B. Meiosis is the cell division proces ...
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Ploidy



Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).
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