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THE MONOHYBRID CROSS

THE MONOHYBRID CROSS. FOLLOWING THE INHERITANCE OF ONE TRAIT. TODAY’S BIG WORDS. MONOHYBRID ALLELE DOMINANT RECESSIVE HOMOZYGOUS HETEROZYGOUS GENOTYPE PHENOTYPE. CROSSING TWO PLANTS. TALL. X. SHORT. PARENTS. ALL TALL. OFFSPRING. TODAY’S BIG WORDS.

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THE MONOHYBRID CROSS

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  1. THE MONOHYBRID CROSS FOLLOWING THE INHERITANCE OF ONE TRAIT

  2. TODAY’S BIG WORDS • MONOHYBRID • ALLELE • DOMINANT • RECESSIVE • HOMOZYGOUS • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  3. CROSSING TWO PLANTS TALL X SHORT PARENTS ALL TALL OFFSPRING

  4. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE • DOMINANT • RECESSIVE • HOMOZYGOUS • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  5. ADD THE SYMBOLISM TALL X SHORT PARENTS TT tt ALL TALL OFFSPRING Tt

  6. EGGS AND POLLEN??? TALL X SHORT PARENTS TT tt T GAMETES t ALL TALL OFFSPRING Tt

  7. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT • RECESSIVE • HOMOZYGOUS • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  8. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE • HOMOZYGOUS • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  9. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE – Trait that can hide • HOMOZYGOUS • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  10. THE PUNNETT SQUARE

  11. THE PUNNETT SQUARE

  12. THE PUNNETT SQUARE

  13. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE – Trait that can hide • HOMOZYGOUS – Has the same alleles • HETEROZYGOUS • GENOTYPE • PHENOTYPE

  14. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE – Trait that can hide • HOMOZYGOUS – Has the same alleles • HETEROZYGOUS – Has different alleles • GENOTYPE • PHENOTYPE

  15. CROSSING TWO OFFSPRING TALL X TALL PARENTS ??????? OFFSPRING

  16. EGGS AND POLLEN??? TALL X TALL PARENTS Tt Tt T t GAMETES T t

  17. POTENTIAL FOR DIFFERENT OFFSPRING TALL X TALL PARENTS Tt Tt T t GAMETES T t OFFSPRING TT TALL

  18. POTENTIAL FOR DIFFERENT OFFSPRING TALL X TALL PARENTS Tt Tt T t GAMETES T t OFFSPRING Tt TALL

  19. POTENTIAL FOR DIFFERENT OFFSPRING TALL X TALL PARENTS Tt Tt T t GAMETES T t OFFSPRING tt SHORT

  20. THE PUNNETT SQUARE

  21. THE PUNNETT SQUARE

  22. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE – Trait that can hide • HOMOZYGOUS – Has the same alleles • HETEROZYGOUS – Has different alleles • GENOTYPE – GENE TYPE (the letters) • PHENOTYPE

  23. TODAY’S BIG WORDS • MONOHYBRID – Following one trait • ALLELE – One form of a gene • DOMINANT – Trait that always shows up • RECESSIVE – Trait that can hide • HOMOZYGOUS – Has the same alleles • HETEROZYGOUS – Has different alleles • GENOTYPE – GENE TYPE (the letters) • PHENOTYPE – WHAT IT LOOKS LIKE

  24. PHENOTYPES

  25. GENOTYPES

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