SCIENTIFIC INQUIRY You are handed a mystery pea plantwith tall stems and axial flowers and asked to determine itsgenotype as quickly as possible. You know that the allele fortall stems (T) is dominant to that for dwarf stems (t) and thatthe allele for axial flowers (A) is dominant to that for terminalflowers (a).(a) Identify all the possible genotypes for your mystery plant.(b) Describe the one cross you would do, out in your garden,to determine the exact genotype of your mystery plant.(c) While waiting for the results of your cross, you predict theresults for each possible genotype listed in part a. Explainhow you do this and why this is not called “performinga cross.”(d) Explain how the results of your cross and your predictions will help you learn the genotype of your mysteryplant.
SCIENTIFIC INQUIRY You are handed a mystery pea plant
with tall stems and axial flowers and asked to determine its
genotype as quickly as possible. You know that the allele for
tall stems (T) is dominant to that for dwarf stems (t) and that
the allele for axial flowers (A) is dominant to that for terminal
flowers (a).
(a) Identify all the possible genotypes for your mystery plant.
(b) Describe the one cross you would do, out in your garden,
to determine the exact genotype of your mystery plant.
(c) While waiting for the results of your cross, you predict the
results for each possible genotype listed in part a. Explain
how you do this and why this is not called “performing
a cross.”
(d) Explain how the results of your cross and your predictions will help you learn the genotype of your mystery
plant.
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