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Crossbreeding terminology
Crossbreeding terminology

... Allele One of two or more forms of a gene at a particular location on a chromosome. For example, blue and brown eyes are determined by different alleles of the gene for eye colour. Chromosomes rod-like structures that are found in the nucleus of all cells. These structures contain genetic informatio ...
Extensions and Exceptions to Mendel*s Laws
Extensions and Exceptions to Mendel*s Laws

...  Maternally inherited  No crossing over; mutates faster (lacks DNA repair enzymes); high number of free radicals in a confined space  Encode proteins used in protein synthesis and energy production  Mutations cause great fatigue  Myoclonal Epilepsy and Ragged Red Fiber Disease: only affects chi ...
Mutation Notes What is a MUTATION? Any change made to the DNA
Mutation Notes What is a MUTATION? Any change made to the DNA

... Any change made to the DNA Do all mutation cause a change in a trait? Not always, it depends on location of mutation and type Mutations can be inherited from parent to child or acquired due to environmental damage or mistakes in replication Mutations happen regulary and are usually nuetral . Many mu ...
Abstract
Abstract

... merotelic kinetochore attachment (attachment of a single kinetochore to two spindle poles instead of just one) are the major chromosome segregation defect responsible for whole- chromosome instability in cancer cells. Indeed, we find that whereas lagging chromosomes occur at significantly higher fre ...
BIOL 1406-61313 CHAPTER 14 AND 15 Dr
BIOL 1406-61313 CHAPTER 14 AND 15 Dr

... 1. The most common phenotype in a natural population is referred to as the _____. genotype wild type autosome mutant phenotype locus 2. Linked loci are loci that _____. have the same alleles residing on them govern traits that have nothing to do with one another govern traits (such as hair texture a ...
Notes - MyWeb
Notes - MyWeb

... An individual with brown and blue alleles of the bey2 gene on chromosome 15. There are two copies of chromosome 15. Each copy has the bey2 gene. On one copy the bey2 gene is in the brown allele, in the other the bey2 gene is in the blue allele. The difference between the brown and blue alleles is du ...
Detection of different genes heredity
Detection of different genes heredity

... Sickle-Cell Disease is a genetic disorder that affects the blood. People with sickle-cell disease produce an abnormal form of hemoglobin, a protein in red blood cells that carries oxygen. Sickle-shaped red blood cells cannot carry as much oxygen as normal-shaped cells. The allele for the sickle-cell ...
17. CHROMOSome - WordPress.com
17. CHROMOSome - WordPress.com

... • Intron: a segment of a gene that is initially transcribed into RNA but is then removed from the primary transcript by splicing together the exon sequences on either side of it. • Enhancers: DNA sequences that act in CIS to increase transcription of a nearby gene. These can act in either orientatio ...
Chromosome Theory & Heredity
Chromosome Theory & Heredity

... Chromosome Theory & Heredity ...
Genes - ASW Moodle
Genes - ASW Moodle

... C. Each organism has two alleles for every trait in their body. -One from the chromosomes* inherited from -One from the chromosomes inherited from -These pair of chromosomes are called *A chromosome is DNA that has been wound up into a rodlike shape *This is why organisms appear to be a physical “b ...
BUILT-IN BIOSAFETY DESIGN Ollie Wright - 29/04/13
BUILT-IN BIOSAFETY DESIGN Ollie Wright - 29/04/13

... preferable - regaining function is evolutionary more difficult than inactivation (i.e. kill switch) ...
Chapter 15~ The Chromosomal Basis of Inheritance ______
Chapter 15~ The Chromosomal Basis of Inheritance ______

... – Genes that are located very close on a chromosome and will be ...
Web Quest
Web Quest

... 3. Click on Dragons and enter the web lab. Follow the directions and answer the questions below as you go. a. Draw each chromosome and label the genes with the traits they control. ...
Mutations
Mutations

... D. Regulation and Development- especially important in shaping the way a complex organism develops from single fertilized cell. 1. Hox genes- controls organs and tissues that develop in various parts of the embryo a. Mutation in one of these “master control genes” can completely change organs that ...
DNA Mutations and Disorders 2010
DNA Mutations and Disorders 2010

... amino acids which will cause wrong protein to form. • Can lead to cell death, disease, disorders ...
Sex-linked and Mitochondrial Inheritance (Learning Objectives
Sex-linked and Mitochondrial Inheritance (Learning Objectives

... Allele is dominant in one sex but recessive in the other The gene may be autosomal or X-linked Example: - Pattern baldness in humans (autosomal) - A heterozygous male is bald, but a heterozygous female is not ...
Genetics
Genetics

... Genetic disorder that produces a defective form of hemoglobin ...
What is a Karyotype?
What is a Karyotype?

... impaired immune system, varying degrees of mental disability. ...
Mutations
Mutations

... Somatic-Cell Mutations ◦ Take place in an organism’s body cells  Can affect organism (certain types of cancer)  Cannot be inherited ...
BIOLOGY Chapter 10: Patterns of Inheritance Name: Section Goal
BIOLOGY Chapter 10: Patterns of Inheritance Name: Section Goal

... behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns; one set of homologous chromosomes come from the female parent and the other comes from the male parent C. The alleles for a gene reside at the same location or gene locus ...
The Nucleus, Chromosomes and Genes
The Nucleus, Chromosomes and Genes

... Effects of mutation A) If the mutation is in a normal body cell Cell death or a change in its functioning. In the worst cases the change in function leads to cancer. This is when a cell start to undergo uncontrollable division to create a tumour. B) If the mutation is in a sperm or egg cell All the ...
Chapter 3 human development
Chapter 3 human development

... such a way that the phenotype reveals the influence of one allele (dominant gene) more than that of the other (recessive gene). VIII. Define phenotype. a. A person’s actual appearance and behavior, which are the result of both genetic and environmental influences. IX. Define behavior genetics. a. Th ...
Lecture Notes
Lecture Notes

... one chromatid its sister chromatid ...
Down syndrome is caused by trisomy 21
Down syndrome is caused by trisomy 21

... Down Syndrome and Translocation Heterozygote • Down syndrome is caused by trisomy 21 (3 copies of chromosome 21). • 95% of Down syndrome cases are associated with nondisjunction and shows no familial recurrence. ...
Human Chromosomes Section 14–2
Human Chromosomes Section 14–2

... parts of the body, one X chromosome that has the allele for orange spots is switched off, whereas in cells in other parts of the body, the other X chromosome with the allele for black spots is switched off. ...
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Skewed X-inactivation

Skewed X chromosome inactivation occurs when the inactivation of one X chromosome is favored over the other, leading to an uneven number of cells with each chromosome inactivated. It is usually defined as one allele being found on the active X chromosome in over 75% of cells, and extreme skewing is when over 90% of cells have inactivated the same X chromosome. It can be caused by primary nonrandom inactivation, either by chance due to a small cell pool or directed by genes, or caused by secondary nonrandom inactivation, which occurs by selection. Most females will have some levels of skewing. It is relatively common in adult females; around 35% of women have skewed ratio over 70:30, and 7% of women have an extreme skewed ratio of over 90:10. This is of medical significance due to the potential for the expression of disease genes present on the X chromosome that are normally not expressed due to random X inactivation. X chromosome inactivation occurs in females to provide dosage compensation between the sexes. If females kept both X chromosomes active they would have twice the number of active X genes than males, who only have one copy of the X chromosome. At approximately the time of implantation (see Implantation (human embryo), one of the two X chromosomes is randomly selected for inactivation. The cell undergoes transcriptional and epigenetic changes to ensure this inactivation is permanent. All progeny from these initial cells will maintain the inactivation of the same chromosome, resulting in a mosaic pattern of cells in females.
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