The leaf color of a certain plant is controlled by one gene.For that gene,the allele G = orange and g = green.You have a plant with orange leaves but do not know whether that plant's genotype is GG or Gg.Which of the following would help you determine the plant's genotype?

Question

Quizplus · Accepted Answer

Crossing the plant with orange leaves (unknown genotype) to a plant with green leaves (genotype gg) would help determine the genotype of the orange-leaved plant. If any offspring have green leaves, the orange-leaved plant must be heterozygous (Gg), because the green allele is recessive and must come from both parents to be expressed. If all offspring have orange leaves, the orange-leaved plant is likely homozygous (GG).

The Leaf Color of a Certain Plant Is Controlled by One