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File Home Insert Draw Design Transitions Animations Slide Sh PROTECTED VIEW Be careful- files from the Internet can contain viruses. Unless you 12 Epistasis & Thyme Chemotypes G-locus A-locus U-locus L-locus C-locus Chemotype GG or Gg Geraniol 88 AA or Aa ?-Terpineol aa UU or Uu Thuyanol B8 uu LLorILinalool 8g aa uuCCor Cc Carvacrol cc Thymol 13 What Thyme Is It? Clicker Question #1 What chemotype will be produced by the genotype below? gg aa UU 11 CCTt A. Geraniol B. ?-Terpineol C. Thuyanol D. Linalool E. Thymo Thyme for Another Question Clicker Question #2 A plant that is GgaauullCc is crossed with another plant that is GgaauuLlcc. What chemotypes are possible from this cross? side 1 of 30

Explanation / Answer

Answer 1 : GG, Gg genotype is dominant over all other genes at A, U,Land C locus. If the genotype at G locus is GG or Gg chemotype will be geraniol.

thyme with genotype ggaaUUllCCTt will have thuyanol chemotype. when genotype at G locus is gg, at A locus is aa along with that if genotype at U locus is UU or Uc, then the chemotype will be thuyanol irrespective of genotype at L , C and T locus. U allele is dominant over L and C alleles.

Anser 2 : GgaauullCc X GgaauuLlcc

possible gametes of GgaauullCc : GaulC,Gaulc, gaulC,gaulc

possible gametes of GgaauuLlcc: GauLc,Gaulc, gauLc, gaulc

Possible chemotypes from this cross are geraniol, linalool, carvacrol and thymol

Answer 3: Different possible thyme chemotypes can be grown in combinations. seeds of the test thyme chemotype can be sown near a thyme plant of different chemotype. For example thymol chemotype seed can be sown near a geraniol chemotype thyme plant. If seeds of thymol chemotype are unable to germinate then allelopathic effect is seen.

Also plants which show chlorosis and die show signs of toxicity exerted by allelopathic plant near them.

GaulC Gaulc gaulC gaulc GauLc GGaauuLlCc ( geraniol) GGaauuLlcc (geraniol) GgaauuLlCc (geraniol) GgaauuLlcc (geraniol) Gaulc GGaauullCc (geraniol) GGaauullcc (geraniol) GgaauullCc (geraniol) Ggaauullcc (geraniol) gauLc GgaauuLlCc (geraniol) GgaauuLlcc (geraniol) ggaauuLlCc (Linalool) ggaauuLlcc (Linalool) gaulc GgaauullCc (geraniol) Ggaauullcc (geraniol) ggaauullCc(Carvacrol) ggaauullcc (thymol)

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