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EmmaPreston43
11.07.2019 •
Biology
Aseed dealer wants to sell four-o'clock seeds that will produce only red, white, or pink flowers. explain how this should be done.
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Answer
Four-O'clock plant (Mirabilis jalapa) follow the phenomenon of co-dominance.
Co-dominance
Co dominance is a relationship among allele where both allele contribute to the phenotype of heterozygote.
Explanation
Japanese 4 o clock plats have two types of flower in their parental generation that is red and white. When these parents are crossed a new plant with pink colour is also observed in their F1 generation as shown in cross below.
Parental generation
Phenotype Red Flower x White Flower
Genotype RR rr
Gametes R, R r, r
F1 generation Rr, Rr,Rr,RrPink Flower.
Result
The allele contributes in the phenotype of flower and pink flowers are produced.
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