Chapter 14: The Human Genome By Tianna Diaz and Sarah Dudas
Human Chromosomes <ul><li>The average human has 46 chromosomes: 23 from each parent </li></ul><ul><li>2  of the 46 are sex...
Human Traits <ul><li>A pedigree chart shows the relationships of an inherited trait within a family.  </li></ul><ul><li>Po...
Human Genes <ul><li>The human genome is the complete set of genetic information, containing tens of thousands of genes. </...
Sex-Linked Genes <ul><li>Sex-linked genes are genes located on the X and Y chromosome that determine an individual’s sex. ...
Chromosomal Disorders <ul><li>Nondisjunction is an error in meiosis where homologous chromosomes do not separate.  </li></...
DNA Testing/Analysis <ul><li>DNA testing is used to predict and check for genetic disorders. </li></ul><ul><li>DNA testing...
The Human Genome Project <ul><li>The Human Genome Project is an attempt to sequence all human DNA. </li></ul><ul><li>It wa...
Gene Therapy <ul><li>Gene therapy is the replacement of a faulty or absent gene with a normal gene that works. </li></ul><...
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  • 3chapter14

    1. 1. Chapter 14: The Human Genome By Tianna Diaz and Sarah Dudas
    2. 2. Human Chromosomes <ul><li>The average human has 46 chromosomes: 23 from each parent </li></ul><ul><li>2 of the 46 are sex chromosomes and the other 44 are autosomes </li></ul><ul><li>All women have 2 X chromosomes and all men have 1 X chromosome and 1 Y chromosome </li></ul>Biologists analyze chromosomes by arranging them in a karyotype Sarah and Tianna
    3. 3. Human Traits <ul><li>A pedigree chart shows the relationships of an inherited trait within a family. </li></ul><ul><li>Polygenic traits are traits controlled by many genes </li></ul>Sarah and Tianna
    4. 4. Human Genes <ul><li>The human genome is the complete set of genetic information, containing tens of thousands of genes. </li></ul><ul><li>Human blood is divided into groups: ABO blood groups and the Rh blood group. </li></ul><ul><li>Alleles, which are a number of the different forms of a gene, are either recessive or dominant. </li></ul>Sarah and Tianna
    5. 5. Sex-Linked Genes <ul><li>Sex-linked genes are genes located on the X and Y chromosome that determine an individual’s sex. </li></ul><ul><li>Because males have only one X chromosomes, all X-linked alleles show up in males even if they’re recessive. </li></ul><ul><li>For the recessive alleles to show up in females, there must be one recessive allele on each X chromosome. </li></ul>Sarah and Tianna
    6. 6. Chromosomal Disorders <ul><li>Nondisjunction is an error in meiosis where homologous chromosomes do not separate. </li></ul><ul><li>If nondisjunction happens, you may end up with an abnormal number of chromosomes, resulting in a chromosomal disorder. </li></ul>Sarah and Tianna
    7. 7. DNA Testing/Analysis <ul><li>DNA testing is used to predict and check for genetic disorders. </li></ul><ul><li>DNA testing can be done through gel electrophoresis or DNA fingerprinting. </li></ul>Sarah and Tianna
    8. 8. The Human Genome Project <ul><li>The Human Genome Project is an attempt to sequence all human DNA. </li></ul><ul><li>It was completed in June 2000. </li></ul>Sarah and Tianna
    9. 9. Gene Therapy <ul><li>Gene therapy is the replacement of a faulty or absent gene with a normal gene that works. </li></ul><ul><li>There have been many cases where gene therapy has been successful, but it doesn’t always cure genetic disorders. </li></ul>Sarah and Tianna
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