Three dominant alleles, called A, C, and R must be present to produce colored co
ID: 23659 • Letter: T
Question
Three dominant alleles, called A, C, and R must be present to produce colored corn kernels. Genotype A/_;C/_;R/_ is colored; all other genotypes are colorless(white). A colored plant is crossed with three tester plants of known genotypes. With tester a/a; c/c; R/R, the colored plant produces 25% colored kernels, with tester a/a; C/C; r/r, it produces 50% colored kernels, and with A/A; c/c; r/r it produces 50% colored kernels. Which of the following is the genotype of the colored plant.1) A/A; C/c; R/r
2) A/a; C/C; R/r
3) A/a; C/c; R/R
4) A/a; C/c; R/r
or none of the above
Explanation / Answer
Three dominant alleles, called A, C, and R must be present to produce colored corn kernels. Genotype A/_;C/_;R/_ is colored; all other genotypes are colorless(white). A colored plant is crossed with three tester plants of known genotypes. With tester a/a; c/c; R/R, the colored plant produces 25% colored kernels, with tester a/a; C/C; r/r, it produces 50% colored kernels, and with A/A; c/c; r/r it produces 50% colored kernels. Which of the following is the genotype of the colored plant.
1) A/A; C/c; R/r
2) A/a; C/C; R/r -correct aswer
3) A/a; C/c; R/R
4) A/a; C/c; R/r
or none of the above
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