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The Work of Gregor Mendel 11-1

The Work of Gregor Mendel 11-1. http://sps.k12.ar.us/massengale/genetics%20tutorial.htm. http://www.jic.bbsrc.ac.uk/germplas/pisum/zgs4f.htm. VOCAB Transmission of characteristics from parents to offspring = ____________ The science that studies heredity =_____________.

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The Work of Gregor Mendel 11-1

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  1. The Work of Gregor Mendel11-1 http://sps.k12.ar.us/massengale/genetics%20tutorial.htm http://www.jic.bbsrc.ac.uk/germplas/pisum/zgs4f.htm

  2. VOCABTransmission of characteristics from parents to offspring = ____________ The science that studies heredity =_____________

  3. The “father of genetics” is __________________, a monk whose study of genetic traits was the beginning of our understanding of how genes are passed on http://www.jic.bbsrc.ac.uk/germplas/pisum/zgs4f.htm

  4. http://hus.yksd.com/distanceedcourses/YKSDbiology/lessons/FourthQuarter/Chapter11/11-1/images/MendelExperiment.gifhttp://hus.yksd.com/distanceedcourses/YKSDbiology/lessons/FourthQuarter/Chapter11/11-1/images/MendelExperiment.gif Mendel designed experiments using __________in the monastery garden

  5. A specific characteristic is called a _________ Mendel studied _________ in peas. Pearson Education Inc,; Publishing as Pearson Prentice Hall

  6. MENDEL’S EXPERIMENTS ____ generation (_________) ____ generation (______= offspring) ___ generation

  7. Principles of Dominance Section 11-1 P Generation F1 Generation F2 Generation Tall Short Tall Tall Tall Tall Tall Short

  8. When Mendel ______________ PLANTS with 2 ______________ traits:(EX: Tall crossed with short) He always found same pattern: 1. ONLY ______ trait ____________ in the ____generation BUT . . . 2. ___________ trait ____________ in the ____ generation in a _________ ratio

  9. PATTERNS ARE THE KEY Image modified from:http://www.laskerfoundation.org/rprimers/gnn/timeline/1866.html http://www.accessexcellence.org/AB/GG/mendel.html

  10. Mendel decided that there must be a __________________ that control each trait and that one factor must be able to _______ the other.

  11. We now know that Mendel’s factors are ______ carried on ________________ _________________ http://www.emc.maricopa.edu/faculty/farabee/BIOBK/Crossover.gif

  12. Different choices for a gene are called ___________. http://sps.k12.ar.us/massengale/genetics%20tutorial.htm

  13. __________________ = An allele that ________ the presence of another allele __________________ = An allelethat __________________ the presence of another allele

  14. PROBABILITY & PUNNETT SQUARES11-2

  15. The chance that an event will occur = ____________________ It can be written as a: Fraction ____ Percent ____ Ratio ____

  16. http://www.arborsci.com/CoolStuff/CoinFlip.jpg COIN FLIP capital There are 2 possible outcomes: HEADS TAILS The chance the coin will land on either one is: ____ ____ ____ Alleles segregate randomly just like a coin flip. . . So can use probability to predict outcomes of genetic crosses.

  17. DOMINANT/RECESSIVE _____________ allele is represented by a ____________ letter.(usually the first letter of the trait) ____________ allele is represented by the SAME _________________ letter. EX: Tall = ______ Short =______

  18. HOMOZYGOUSHETEROZYGOUS When both alleles in the pair are the SAME Ex: ____ or _____ ____________________= ________ When both alleles in the pair are different Ex: ______ ___________________ = ______________

  19. PHENOTYPE/GENOTYPE The genetic makeup of an organism is its _____________ The appearance of an organism is its _____________

  20. PUNNETT SQUARES are used to show possible offspring from a cross between 2 parents _______________ go at top and on left side Boxes show _______________________________ Parent alleles T T T t possible offspring combinations

  21. Tall = T Round seeds = R Short = t Wrinkled seeds = r What’s the genotype? Homozygous short = ________ Heterozygous round = _____ Pure wrinkled = _____ Hybrid tall = _____

  22. IN PEA PLANTS Tall is dominant over short TALL = ____ SHORT = ____ LET’S MAKE A CROSS! PURE TALL PURE SHORT X

  23. PURE TALL parentWhat are the parent alleles?   What gametes can it make?

  24. PURE SHORT parent What are the parent alleles?   What gametes can it make?

  25. _____ of the offspring ____ % ___/4 will be GENOTYPE _____ PHENOTYPE _______

  26. HYBRID TALL parent What are the parent alleles? _________   What gametes can it make?

  27. GENOTYPES ¼ = _____ ½ = _____ ¼ = _____ PHENOTYPES ____ or ____% _________ ____or ____% __________

  28. PRACTICE MAKING GAMETES R Tall = ____ Round seeds = ___ Short = ____ Wrinkled seeds = ___ T t r

  29. What are the possible gametes? Homozygous Tall parent = What gametes can it produce?  

  30. What are the possible gametes? PURE wrinkled parent = What gametes can it produce?  

  31. What are the possible gametes? Heterozygous Round parent = What gametes can it produce?  

  32. What are the possible gametes? Hybrid Tall parent = What gametes can it produce?  

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