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Where is the mutation? D. mau. D. sech. x x x x x x x x x x x

Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

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Page 1: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

Where is the mutation?

D. mau. 

D. sech.xxxxxx

x

xx

x

x

Page 2: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

High­resolution mapping of the cis­regulatory mutation

D. sechellia

x

svb

selection of recombinants based on eye color

D. mauritiana

svbP[w+] P[w+]

1.2 Mb

                recombination mapping

50 kb

reporter

enhancer bashing

AlistairMcGregor

Page 3: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

Among progeny individuals: select [orange eye] flies:

3/100 flies

Page 4: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

High­resolution mapping of the cis­regulatory mutation

D. sechellia

x

D. mauritiana

svbP[w+] P[w+] svb

selection of recombinants based on eye color

1.2 Mb

50 kb

reporter

enhancer bashing

recombination mapping

One recombination event 

every 2kb

Page 5: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. mauritiana­like

D. sechellia­like

D. sechellia

D. mauritiana

Page 6: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. mauritiana­like

D. sechellia­like

D. sechellia

D. mauritiana

Five types of recombinants

Three new phenotypes

QuickTime et unᆰd compresseur TIFF (non compress )ホ ホ

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Page 7: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

Three enhancer regions

50 kb

reporter

D. melanogaster

reporter

D. sechellia

AlistairMcGregor

Page 8: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

Three enhancer regions

50 kb

reporter

D. sechellia

reporter

D. melanogaster

AlistairMcGregor

Page 9: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. sechelliax

D. mauritiana

svbP[w+] P[w+] svb

selection of 600 recombinants based on eye color

1.2 Mb

Where are the mutations responsible?

1

high recombination

Page 10: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

Among progeny individuals: select [orange eye] flies:

3/100 flies

Page 11: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. sechelliax

D. mauritiana

svbP[w+] P[w+] svb

selection of 600 recombinants based on eye color

1.2 Mb

What are the mutations responsible?

1

high recombination selection of 50 recombinants  based on PCR markers

PCR marker

PCR marker

phenotyping

100 kb

2

3

svb

Page 12: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

One recombination event 

every 2kb

D. sechelliax

D. mauritiana

svbP[w+] P[w+] svb

selection of 600 recombinants based on eye color

selection of 50 recombinants  based on PCR markers

PCR marker

PCR marker

phenotyping

1.2 Mb

100 kb

What are the mutations responsible?

1

2

3

svb

Page 13: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. mauritiana­like

D. sechellia­like

D. sechellia

D. mauritiana

Page 14: Where is the mutation?vorgogoz/articles/diapos... · 1.2 Mb recombination mapping 50 kb reporter enhancer bashing Alistair McGregor. Among progeny individuals: select [orange eye]

D. mauritiana­like

D. sechellia­like

Five types of recombinants

Three new phenotypes

D. sechellia

D. mauritiana