| A = Abdominal |
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Gene:
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A
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Feature/structure:
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abdomen
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Linkage Group:
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2
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Origin:
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Description:
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• LOF mutations posteriorize abdominal segments. Hypomorphs have a range of subtle effects on the abdomen, such as a small posteriorly projecting "beak" or point at the midline of ventral A6. Some versions have in indentation in the point at midline giving it a notched (N) appearance.
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| A(Es-1) = Abdominal(Extra sclerite) |
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Gene:
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A
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Feature/structure:
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Ventral abdominal segment 2
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Linkage Group:
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( 2 ,
4 )
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Origin:
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Gamma irradiation of Ga-1, Beeman Lab
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Description:
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• Homeotic transformation of ventral part of abdominal segment 2 [normally forming the socket of the coxae of the third pair of legs] towards segment 3.
• Excellent crossover suppressor and balancer [second only to Ey in usefulness].
• No crossover suppr. between HOM-C and Rd.
• Ag/Es1 spontaneously generates viable Df[HOM-C] gametes at a frequency of 1/100.0 when outcrossed [see Ag].
• Generated euD when outcrossed [BB, p. 32].
• Translocation demonstrated cytologically, both cis and trans with Spa.
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| A(mas) = A(missing abdominal sternite) |
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Gene:
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A
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Feature/structure:
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3rd abdominal sclerite
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Linkage Group:
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2
|
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Origin:
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spontaneous
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Description:
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• mas is an abdominal 3 to abdominal 2 transformation.
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Illustration:
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| A(pas) = A(pointed abdominal sternite) |
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Gene:
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A
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Feature/structure:
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4th abdominal sclerite
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Linkage Group:
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2
|
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Origin:
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spontaneous
|
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Description:
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• pas is an abdominal 4 to abdominal 3 transformation.
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Illustration:
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