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kmaanziya Group Title

budgie birds exist in 4 colour types,blue,green,yellow & white.All these can be maintained in pure lines & following results were obtained when pure line types were crossed.-yellow one was crossed with a white one,all progeny were yellow.-blue one was crossed white one,all progeny were blue.-green one was crossed with white one,all progeny were green.-yellow one was crossed with blue one,all progeny were green.Which of the following hypothesis CANNOT be made from these results regarding the inheritance of the colour ?

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    1)more than one gene is involved in the determination of the colour. 2)this is an example for polyallelism. 3)white colour is a double recessive character. 4)green is a double dominant character. 5)green colour can be produced by heterozygous genotype. out of these hypothesis which cannot be made from above results described in the question.

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