Sunday, January 22, 2012

Red flowers are dominant over white flowers in Indian Paintbrush.?

what color would a flower with genotype Rr be?



red

pink

white

a mixture of red and white petals

Red flowers are dominant over white flowers in Indian Paintbrush.?
In this case, it is probable that "R" is a gene for a red pigment and "r" is a faulty version of the gene - an error somewhere in the process means that the pigment is not produced, and the flowers remain white.



Indian paintbrush flowers are diploid, which means they have two of every gene - one from each parent. Even if they only have one of the functioning allele, R, the flowers will be red, because white is merely the absence of pigment, not a pigment itself.
Reply:with the genotype of Rr, the phenotype would be red flowers
Reply:dominant allele refers to a genetic feature that hides the recessive allele, so red.


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