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Experimental Design

This study investigates the dominant traits of eye color (Green vs. Purple) and antenna length (Short vs. Long) in Drosophila. Results showed that Green eye color is dominant over Purple, and Long antenna is dominant over Short. In the F1 generation, 49 flies exhibited Green eyes with Long antennas while 51 displayed Green eyes with Short antennas. In the F2 generation, the observed ratios aligned closely with expected values, confirming dominance patterns. Statistical analysis indicates that variations are not significant, supporting the conclusions of trait dominance.

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Experimental Design

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  1. Experimental Design Hypothesis : Green eye is dominant to purple eye & Short antenna is dominant to long antenna X X Green eye short ante Green eye, long ante Green eye, long ante Purple eye, long ante F1: 49 Green eye Long ante & 51 Green eye Short ante F1: ALL Purple eye, Long ante Green long X Green long Purple long X Purple long F2: 69 Green long & 31 Green Short F2: 72 Purple long & 28 Green long Row # Category Observed Expected # Expected 1     long    69    75    75.000%    2     short    31    25    25.000%    Row # Category Observed Expected # Expected 1     purple    72      75 75.000%    2     green  28    25    25.000%    Chi squared equals 1.920 with 1 degrees of freedom.   The two-tailed P value equals 0.1659   This difference is considered to be not statistically significant. Chi squared equals 0.480 with 1 degrees of freedom.   The two-tailed P value equals 0.4884   This difference is considered to be not statistically significant. CONCLUSION : Long antenna is dominant to short antenna CONCLUSION : Purple eye is dominant to Green eye

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