'Klinefelter syndrome' diaporamas de présentation

Genetics

Genetics. Genetics A. Gregor Mendel 1. 1 st study on heredity a. passing of characteristics from parents to offspring. 2. Occupation: monk 3. Worked with pea plants a. self-pollinators meaning inherit all characteristics from the original plant or identical: true-breeding .

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Chapter 3

Chapter 3. Biological Beginnings. The Evolutionary Perspective. Natural Selection. Natural selection is the evolutionary process that favours individuals of a species that are more adapted to survive and reproduce. Adaptive Behaviour.

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Chapter 11

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Chromosomes

Chromosomes. Cytogenetics. A subdiscipline within genetics Focuses on chromosome variations Abnormal number of copies of genes or chromosomes can lead to genetic abnormalities Human genome sequence information is used to identify genes that contribute to the chromosome-related syndromes .

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Major Disorders of Sex Differentiation in Humans

Major Disorders of Sex Differentiation in Humans. Dr. Salman Elawad Biology Instructor CVCC. Outlines. Sex Determination Embryonic Sex Structures Male Sex Disorders Male Reproductive System Klinefelter Syndrome (XXY) 5-Alpha Reductace Deficiency (A-ARD)

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Meiosis

Meiosis. Creation of Gametes. Asexual reproduction yields two identical organisms (with exception of mutations) Sexual reproduction merges the genes of the two parents Result: two versions of each chromosome Called homologous chromosomes Organism is diploid (2n=46)

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Meiosis

Meiosis. Creation of Gametes. Asexual reproduction yields two identical organisms (with exception of mutations) Sexual reproduction merges the genes of the two parents Result: two versions of each chromosome Called homologous chromosomes Organism is diploid (2n=46)

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Genetic disorders

Genetic disorders. Gene/Chromosome Maps. Formation of sperm & egg. Three Types Single gene Cystic fibrosis PKU Chromosomal Down Syndrome Mult -factors Alzheimers Disease. Down Syndrome Trisomy 21. Characteristics. Almond shaped eyes with upward slant Short stature

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Congenital malformation of brain

Congenital malformation of brain. Meningocele: Partial or total absence of occipital bones results in protrusion of the meninges from the brain. Meningoencephalocoele: Large defects of occipital bone results in protrusion part of the brain and even ventricle.

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Mutations

Mutations. Mutations. Changes in DNA Can affect RNA and thus protein. Point Mutations. Change of a single nucleotide. Substitution Mutation. THE FAT CAT ATE THE RAT THE FAT B AT ATE THE RAT. Insertion. THE FAT CAT ATE THE RAT THE F F A TCA TAT ETH ERA T.

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Amniocentesis

Amniocentesis . Brittany Smith. What is Amniocentesis?. An amniocentesis is a test that is done to check for possible health problems in a baby that is not yet born. How is an Amniocentesis Preformed?. The abdomen is cleaned with an antiseptic solution to prevent infection .

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Genetics & Inheritance Tuesday 10 /22/13

Genetics & Inheritance Tuesday 10 /22/13. B eyond Mendel Incomplete Dominance Co-Dominance / Multiple Alleles Environmental influence I nheritance patterns pedigree analysis autosomal vs. X-linked traits Chromosomal Basis of Inheritance gene linkage

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(9)

(9). Types of Asexual Reproduction (hand out) 5.8 (160) Meiosis 7.2 (206) Atypical Meiosis 7.9 (222). Binary Fission. Organism splits directly into 2 equal-sized offspring. Each with a copy of the parents genetics information. Ex. Bacteria . Budding.

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Lecture 25: DNA repair, recombination; changes in chromosome number

Lecture 25: DNA repair, recombination; changes in chromosome number. Non-homologous end joining repairs DSBs. DSB repair by homologous recombination. Sister chromatids. Initiation of meiotic recombination. Recombination: Holliday junctions. Holliday junction. Gene conversion.

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Chromosomal Basis of Inheritance

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3.16 Atypical Meiosis

3.16 Atypical Meiosis . (Sec 4.5 pg 127) . Meiosis is the process that creates sex cells. During it the chromosomes are split evenly into different cells turning diploid cells into haploid cells. . Once in a while an error may occur.

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Group 7

Group 7. Basic Facts on Birth Defects. GROUP 7 BASIC BIRTH DEFECT FACTS. About 150,000 babies are born each year with birth defects. The parents of one out of every 28 babies receive the frightening news that their baby has a birth defect There are over 4,000 known birth defects

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Chromosomal Mutations

Chromosomal Mutations. Karyotype. arrangement of chromosomes from one body cell. Sex Chromosomes. Determine the sex of the individual In humans: X and Y chromosomes X chromosome larger than Y chromosome. All female gametes (egg cells) contain an X chromosome

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Childhood Leukemia

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Review

Review. What is a genome? What is the difference between a haploid and a diploid cell? Meiosis produces ______________ cells M itosis produces _______________ cells. Describe where mutations occur. Explain how mutations are connected to proteins. Identify how mustations can occur.

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