Cytology and Genetics		, 
		vol. , 
		no. ,  , 
		doi: https://www.doi.org/
	
	
Results of investigation on non-allelic interaction of mutant genes gf and B in tomato are represented. It was revealed that gf gene inhibits β-carotene synthesis owing to incomplete transformation of chlorophyll. In a double BB/gfgf homozygote the joint discrete manifestation of effects of two genes takes place resulting in a new phenotype – dirty-orange colour of a fruit.
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