Heredity Unit: Cornell Notes Mr. Forde  Black Team  2008
Unit: Heredity Intro <ul><li>The passing on of traits from an organism to its offspring   </li></ul><ul><li>A characterist...
Unit: Heredity Intro <ul><li>A short section of a chromosome that contains information about a trait.  </li></ul><ul><li>E...
Unit: Heredity <ul><li>Different forms of a gene.  </li></ul><ul><li>(e.g. TT ot Tt for tallness in plants.)  </li></ul><u...
Unit: Heredity <ul><li>Used to show all of the possible outcomes of a genetic cross and to determine the probability of a ...
Unit: Heredity <ul><li>(Deoxyribonucleic Acid) stores and passes on genetic information from one generation to the next. <...
Unit: Heredity Name: Date: Group: <ul><li>What is REPLICATION? </li></ul>
Unit: Heredity <ul><li>A picture of the size, shape and number of chromosomes of an organism. </li></ul><ul><li>(Chromosom...
Unit: Heredity <ul><li>Gametes are sex cells.  The egg cell and sperm cell are gametes.  </li></ul><ul><li>2) This is so t...
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Unit Three Cornell Notes B

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Unit Three Cornell Notes B

  1. 1. Heredity Unit: Cornell Notes Mr. Forde Black Team 2008
  2. 2. Unit: Heredity Intro <ul><li>The passing on of traits from an organism to its offspring </li></ul><ul><li>A characteristic that can be passed from a parent to their offspring through genes </li></ul><ul><li>The scientific study of heredity </li></ul><ul><li>A 19th century priest who studied pea plants and is the “father of genetics” </li></ul>Name: Date: Group: <ul><li>What is heredity ? </li></ul><ul><li>What are traits ? </li></ul><ul><li>What is genetics ? </li></ul><ul><li>Who was Gregor Mendel ? </li></ul>
  3. 3. Unit: Heredity Intro <ul><li>A short section of a chromosome that contains information about a trait. </li></ul><ul><li>Each person has two genes for each trait because our chromosomes come in pairs! </li></ul><ul><li>2) Humans have 23 pairs of chromosomes (46). Half come from Mom and half come from Dad. </li></ul><ul><li>3) They can have more or less than humans! </li></ul><ul><li>Dog= 78 </li></ul><ul><li>Human= 46 </li></ul><ul><li>Cat = 38 </li></ul><ul><li>Pea plant = 14 </li></ul>Name: Date: Group: <ul><li>What is a gene? </li></ul><ul><li>2) How many chromosomes do we have? </li></ul><ul><li>3) Do all living things have the same number of chromosomes? </li></ul>
  4. 4. Unit: Heredity <ul><li>Different forms of a gene. </li></ul><ul><li>(e.g. TT ot Tt for tallness in plants.) </li></ul><ul><li>2) An allele whose trait always shows up when the allele is present. </li></ul><ul><li>3) An allele that is covered up when the dominant allele is present. </li></ul><ul><li>4) A hybrid has a mix of alleles for a trait. (e.g. Tt, Bb, and Gg) </li></ul><ul><li>An organisms genetic make-up, or allele combinations. </li></ul><ul><li>(e.g. Bb) </li></ul><ul><li>6) An organisms physical appearance </li></ul><ul><li>(e.g. Brown eyes) </li></ul>Name: Date: Group: <ul><li>What are alleles? </li></ul><ul><li>What is a dominant allele? </li></ul><ul><li>What is a recessive allele? </li></ul><ul><li>What is a hybrid? </li></ul><ul><li>What is an organisms Genotype? </li></ul><ul><li>What is an organisms Phenotype? </li></ul>
  5. 5. Unit: Heredity <ul><li>Used to show all of the possible outcomes of a genetic cross and to determine the probability of a particular outcome. </li></ul><ul><li><--- in the Punnett Square to the left </li></ul><ul><li>WW = Homozygous dominant </li></ul><ul><li>2/4 or 50% </li></ul><ul><li>Ww= Heterozygous </li></ul><ul><li>2/4 or 50% </li></ul><ul><li><there was no ww= Homozygous recessive or 0%> </li></ul>Name: Date: Group: <ul><li>What is a Punnett Square? </li></ul>
  6. 6. Unit: Heredity <ul><li>(Deoxyribonucleic Acid) stores and passes on genetic information from one generation to the next. </li></ul><ul><li>DNA looks like a twisted ladder or spiral staircase. </li></ul><ul><li>The steps of the ladder are made up of nitrogen bases. </li></ul><ul><li>Adenine (A) pairs with Thymine (T) </li></ul><ul><li>Cytosine <C> pairs with Guanine <G> </li></ul><ul><li>3) The order of the letters of the bases makes up the code. </li></ul><ul><li>e.g AATCGATAATCG </li></ul>Name: Date: Group: <ul><li>What is DNA? </li></ul><ul><li>How is DNA Structured? </li></ul><ul><li>What is the genetic code? </li></ul>
  7. 7. Unit: Heredity Name: Date: Group: <ul><li>What is REPLICATION? </li></ul>
  8. 8. Unit: Heredity <ul><li>A picture of the size, shape and number of chromosomes of an organism. </li></ul><ul><li>(Chromosome pairs look alike.) </li></ul><ul><li>2) The removal of a small amount of fluid around a developing baby, which contains the baby’s cells, in order to examine the chromosomes of the baby. </li></ul><ul><li>3) When a chromosome pair does not separate properly during meiosis. </li></ul><ul><li>This results in a cell being formed with more or less chromosomes than normal. </li></ul>Name: Date: Group: <ul><li>What is a karyotype? </li></ul><ul><li>What is an amniocentesis? </li></ul><ul><li>What is non-disjunction? </li></ul>
  9. 9. Unit: Heredity <ul><li>Gametes are sex cells. The egg cell and sperm cell are gametes. </li></ul><ul><li>2) This is so the gametes will have 1/2 the amount of DNA when they combine to form the zygote. </li></ul><ul><li>3) A zygote is a fertilized egg. </li></ul><ul><li>4) A somatic cell is a body cell. It has a full set (46) of chromosomes. Al l cells that are not gametes are considered somatic cells. </li></ul><ul><li>5) This is what happens in sexual reproduction due to the mix of chromosomes from a male and female combining. A unique combination is formed. </li></ul>Name: Date: Group: <ul><li>What are gametes? </li></ul><ul><li>Why are gametes produced through meiosis? </li></ul><ul><li>What is a zygote? </li></ul><ul><li>4) What is a somatic cell? </li></ul><ul><li>5) What is genetic variability? </li></ul>

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