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 ?

Question

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 ?

anonymous · Answer

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.