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hey everyone,
was studying and ran across this problem:
Red is dominant over white in a certain flower. To test
whether a red offspring is homozygous or heterozygous
in this flower
A. cross it with a red plant that had a white parent.
B. cross it with a red plant that had two red parents.
C. cross it with a white plant.
D. Two of the above will work
E. None of the above will work
Kaplan says "D", meaning both A and C will work. Now, typically the answer should be C since it's a test cross. "A" could work, but probably doesnt determine actual outcomes; since the genotype is Rr, it doesn't mean you're going to get a 'red' flower every time, know what i'm sayin? So anyway, my question is ... is the real answer C? thanks!
was studying and ran across this problem:
Red is dominant over white in a certain flower. To test
whether a red offspring is homozygous or heterozygous
in this flower
A. cross it with a red plant that had a white parent.
B. cross it with a red plant that had two red parents.
C. cross it with a white plant.
D. Two of the above will work
E. None of the above will work
Kaplan says "D", meaning both A and C will work. Now, typically the answer should be C since it's a test cross. "A" could work, but probably doesnt determine actual outcomes; since the genotype is Rr, it doesn't mean you're going to get a 'red' flower every time, know what i'm sayin? So anyway, my question is ... is the real answer C? thanks!