Genetics The field of biology devoted to understanding heredity, how characteristics are transmitted from parents to offsp...
Gregor Mendel <ul><li>Entered monastery in Brunn, Austria at age of 21 in 1842. </li></ul><ul><li>Assigned task of tending...
Mendel observed 7 characteristics each with 2 contrasting traits.
Important vocabulary for understanding Mendel’s experiments. <ul><li>Pollination = plant reproduction anthers/stamens(male...
 
Mendel’s Experiments
Mendel’s Results and Conclusions <ul><li>Recessive and Dominant Traits </li></ul><ul><li>Law of Segregation </li></ul><ul>...
Recessive and Dominant Traits <ul><li>Recessive Factor – lower case </li></ul><ul><li>Dominant Factor – upper case </li></...
Law of Segregation <ul><li>A pair of factors is segregated, or separated, during the formation  of gametes. </li></ul>
Law of Independent Assortment <ul><li>Factors for different characteristics are distributed to gametes independently. </li...
More Vocabulary <ul><li>Genotype – genetic make-up of an organism. </li></ul><ul><li>Pp </li></ul><ul><li>Phenotype – phys...
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Genetics 1 ruder

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Genetics 1 ruder

  1. 1. Genetics The field of biology devoted to understanding heredity, how characteristics are transmitted from parents to offspring.
  2. 2. Gregor Mendel <ul><li>Entered monastery in Brunn, Austria at age of 21 in 1842. </li></ul><ul><li>Assigned task of tending the garden. </li></ul><ul><li>1851 entered the University of Vienna to study science and mathematics (Statistics). </li></ul><ul><li>Returned to monastery to teach high school and kept a garden plot where he grew garden peas , Pisum sativum. </li></ul><ul><li>Considered the father of genetics. </li></ul>
  3. 3. Mendel observed 7 characteristics each with 2 contrasting traits.
  4. 4. Important vocabulary for understanding Mendel’s experiments. <ul><li>Pollination = plant reproduction anthers/stamens(male) stigma/carpel(female) </li></ul><ul><li>Self-pollination vs. cross-pollination </li></ul><ul><li>Mendel controlled pollination by removing anthers. </li></ul><ul><li>Pure – ALWAYS produce offspring with a particular trait (14 total for the pea plants he observed). </li></ul>
  5. 6. Mendel’s Experiments
  6. 7. Mendel’s Results and Conclusions <ul><li>Recessive and Dominant Traits </li></ul><ul><li>Law of Segregation </li></ul><ul><li>Law of Independent Assortment </li></ul>
  7. 8. Recessive and Dominant Traits <ul><li>Recessive Factor – lower case </li></ul><ul><li>Dominant Factor – upper case </li></ul><ul><li>Factors are now called Alleles. </li></ul>
  8. 9. Law of Segregation <ul><li>A pair of factors is segregated, or separated, during the formation of gametes. </li></ul>
  9. 10. Law of Independent Assortment <ul><li>Factors for different characteristics are distributed to gametes independently. </li></ul>
  10. 11. More Vocabulary <ul><li>Genotype – genetic make-up of an organism. </li></ul><ul><li>Pp </li></ul><ul><li>Phenotype – physical appearance of an org. </li></ul><ul><li>Purple </li></ul><ul><li>Homozygous – both alleles of a pair are alike: </li></ul><ul><li>PP, pp, both dominant or both recessive. (Pure) </li></ul><ul><li>Heterozygous – Alleles of a pair are different: </li></ul><ul><li>Pp, one dominant and one recessive. (Hybrid) </li></ul>

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