Drosophila melanogaster Life cycle and introduction to genetics.

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Presentation transcript:

Drosophila melanogaster Life cycle and introduction to genetics

Drosophila as model species Studied for ~100 years Short life cycle Many available mutants Studied for ~100 years Short life cycle Many available mutants

Life cycle 10 25° C 20 18° C Stages –Embryogenesis (Egg) –first instar larvae –second instar larvae –third instar larvae –pupal stage –Adult Fly

Sexing Drosophila Females larger than males Males- dorsal posterior plates are black Females- only last plate is dark

Sexing Cont. Males-visible genitals Females not as visible Males- sex combs Females- lack sex combs

Sex Cont.

Genetics

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