Transformation of ray 6 to a thin ray which is anteriorly displaced and fuses with ray 4 (95%). A 10th ray is found in about 50% of the sides scored. Body is slightly shorter.

Transformation of ray 6 to a thin ray which is anteriorly displaced and fuses with ray 4 (95%). A 10th ray is found in about 50% of the sides scored. Slightly shorter than WT. mab-21(bx53)/yDf10 is embryonically lethal with embryo arrest at 2 fold stage.

Transformation of ray 6 to a thin ray which is anteriorly displaced and fuses with ray 4 (95%). A 10th ray is found in about 50% of the sides scored. Body is slightly shorter. Do not distribute this strain; other labs should request it from the CGC. This strain cannot be distributed to commercial organizations. This strain cannot be used for any commercial purpose or for work on human subjects.