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1. Introduction 2. Fact or Fiction?
1. Introduction 2. Fact or Fiction?

... 1. No two cells of the human body contain exactly the same material. 2. Not all individuals are born genetically unique. 3. All the genes a person has show up as observable traits. 4. Alcoholism is inherited. ...
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... Disorder which is produces by a single dominant allele, no symptoms until individual is in their 30’s or 40’s ________________15. Caused by a point mutation (substitution) that changes one amino acid in the polypeptide ________________16. XO is called ________________17. XO is an example of a disord ...
Ch.5
Ch.5

... 2)Multiple alleles-a gene that exists in more than 2 allele forms, although a diploid individual only has 1 or 2 of them. • Although each person has 2 alleles for any autosomal gene (one on each chromosome) a gene can exist in more than 2 allelic forms • Ex: Blood Types ...
Heridity: Passing It On
Heridity: Passing It On

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Chapter 11 PowerPoint – Genetics

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Biology 105 - Montgomery College

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11-3- Exploring Mendelian Genetics
11-3- Exploring Mendelian Genetics

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Chapter 15~ The Chromosomal Basis of Inheritance
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Competency Goal # 3: DNA, Protein Synthesis, Genetics

... 36. __________________________________ - Inserting corrected gene into person who has a defective gene. 37.__________________________________ - also called DNA fingerprinting and is used in crime scene investigation. DNA fragments separate according to __________________. 38. Transgenic Organisms: _ ...
Competency Goal # 3: DNA, Protein Synthesis
Competency Goal # 3: DNA, Protein Synthesis

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Chapter 3: Genetics: From Genotype to Phenotype
Chapter 3: Genetics: From Genotype to Phenotype

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ChromosomesII - life.illinois.edu

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... the inactivated X chromosome. It encodes an RNA that coats the X chromosome, which subsequently attracts proteins that are responsible for the condensation. C20. Erasure and reestablishment of the imprint occurs during gametogenesis. It is necessary to erase the imprint because each sex will either ...
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C1. Epigenetic refers to the idea that a genetic phenomenon seems

... the inactivated X chromosome. It encodes an RNA that coats the X chromosome, which subsequently attracts proteins that are responsible for the condensation. C20. Erasure and reestablishment of the imprint occurs during gametogenesis. It is necessary to erase the imprint because each sex will either ...
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Meiosis - Learning on the Loop

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Genetics revision for learners
Genetics revision for learners

... Meiosis produces gametes with half the number of chromosomes. This means that pairs of alleles are separated at meiosis. During meiosis matching chromosomes cross over (swap sections of the chromosome) which adds variation. Independent assortment also increases variation as the chromosome pairs rand ...
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Exam 2

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09ans - Evergreen Archives

... Mitosis proceeds normally in triploid cells because replicated chromosomes do not pair with homologues. They align independently, and then the sister chromatids separatereplicate-separate over and over. It does not matter how many copies of each type of chromosome are present. However, in meiosis, h ...
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Document

... Ligase: joins (seals) the ...
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X-inactivation



X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. The inactive X chromosome is silenced by its being packaged in such a way that it has a transcriptionally inactive structure called heterochromatin. As nearly all female mammals have two X chromosomes, X-inactivation prevents them from having twice as many X chromosome gene products as males, who only possess a single copy of the X chromosome (see dosage compensation). The choice of which X chromosome will be inactivated is random in placental mammals such as humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.
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