Chapter 11 Introduction to Genetics
Gregor Mendel’s Work <ul><li>Mendel worked with garden peas, which used parts of their flowers to reproduce by self-pollin...
Genes & Dominance <ul><li>Mendel studied the traits of pea plants. Traits are specific characteristics that determine an i...
Genetics and Probability  <ul><li>Probability is the likelihood that a particular event will occur. </li></ul><ul><li>It c...
Punnett Squares <ul><li>Gene combinations that form a genetic cross can be determined by drawing a punnett square. </li></...
Dominant Alleles  <ul><li>If one allele is not completely dominant over another, its called incomplete dominance. </li></u...
Recessive Alleles <ul><li>Organisms with recessive alleles will always have that trait only if the dominant allele is elim...
Meiosis <ul><li>There are two stages in meiosis; Meiosis I and Meiosis II. There are also eight phases. </li></ul><ul><li>...
Comparing Mitosis & Meiosis <ul><li>Mitosis is the creation of diploid cells </li></ul><ul><ul><ul><li>Meiosis produces ha...
Gene Linkage <ul><li>Thomas Morgan did research on fruit flies and found that they were linked.  </li></ul><ul><li>Gene li...
Gene Maps . <ul><li>Alfred Sturtevant came up with the idea that the rate of crossing-over separated linked genes. </li></...
THE END… <ul><li>  BY: </li></ul><ul><li>Brenda Huynh  </li></ul><ul><li>  & </li></ul><ul><li>  Deanna Calhoun </li></ul>
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2chapter11

  1. 1. Chapter 11 Introduction to Genetics
  2. 2. Gregor Mendel’s Work <ul><li>Mendel worked with garden peas, which used parts of their flowers to reproduce by self-pollination. </li></ul><ul><li>These peas were true-breeding, meaning that they would produce more peas that would be more identical to themselves. </li></ul>B.H.
  3. 3. Genes & Dominance <ul><li>Mendel studied the traits of pea plants. Traits are specific characteristics that determine an individual. </li></ul><ul><li>Parents with different traits had hybrid offspring. </li></ul><ul><li>Mendel came up with two conclusions: </li></ul><ul><li>factors that determine biological inheritance, are past from one generation to the next otherwise known as genes. </li></ul><ul><li>the principle of dominance shows that some alleles are dominant and others recessive </li></ul>D.C.
  4. 4. Genetics and Probability <ul><li>Probability is the likelihood that a particular event will occur. </li></ul><ul><li>It can predict genetic outcome of genetic crosses. </li></ul>B.H
  5. 5. Punnett Squares <ul><li>Gene combinations that form a genetic cross can be determined by drawing a punnett square. </li></ul><ul><li>Organisms with identical alleles are homozygous(true-breeding) </li></ul><ul><li>Organisms with different alleles are heterozygous(hybrids) </li></ul><ul><li>Phenotypes determine physical characteristics </li></ul><ul><li>Genotype determines genetic makeup </li></ul>D.C
  6. 6. Dominant Alleles <ul><li>If one allele is not completely dominant over another, its called incomplete dominance. </li></ul><ul><li>Organisms with dominant alleles for a particular trait will always have that form. </li></ul>B.H.
  7. 7. Recessive Alleles <ul><li>Organisms with recessive alleles will always have that trait only if the dominant allele is eliminated </li></ul>D.C
  8. 8. Meiosis <ul><li>There are two stages in meiosis; Meiosis I and Meiosis II. There are also eight phases. </li></ul><ul><li>Meiosis is the process of reduction division. The chromosomes in each cell is cut in half. </li></ul>B.H
  9. 9. Comparing Mitosis & Meiosis <ul><li>Mitosis is the creation of diploid cells </li></ul><ul><ul><ul><li>Meiosis produces haploid cells </li></ul></ul></ul>D.C
  10. 10. Gene Linkage <ul><li>Thomas Morgan did research on fruit flies and found that they were linked. </li></ul><ul><li>Gene linkage are traits that are inherited together. </li></ul><ul><li>Each chromosome is a group of linked genes. </li></ul>B.H
  11. 11. Gene Maps . <ul><li>Alfred Sturtevant came up with the idea that the rate of crossing-over separated linked genes. </li></ul><ul><li>Gene maps show relative locations of genes on a chromosome. </li></ul><ul><li>His idea has been used to construct genetic maps </li></ul>D.C.
  12. 12. THE END… <ul><li> BY: </li></ul><ul><li>Brenda Huynh </li></ul><ul><li> & </li></ul><ul><li> Deanna Calhoun </li></ul>
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