A corn breeder has a plant that is dominant for 4 traits that are known to...

A corn breeder has a plant that is dominant for 4 traits that are known to assort independently (i.e. it’s phenotype is A_ B_ C_ D_). This plant has desirable properties, so the breeder wishes to determine its exact genotype. The breeder performs a test cross and obtains the following results in the F1 generation.

Phenotype	Observed #	Phenotype	Observed #
A_ B_ C_ D_	61	A_ bb cc D_	0
aa B_C_D_	79	A_ bb C_ dd	0
A_bb C_D_	0	A_ B_ cc dd	73
A_ B_ cc D_	59	aa bb cc D_	0
A_ B_ C_ dd	76	aa bb C_ dd	0
aa bb C_ D_	0	aa B_ cc dd	81
aa B_ cc D_	97	A_ bb cc dd	0
aa B_ C_ dd	74	aa bb cc dd	0

Based on these results, the breeder is confident that they know the original plant’s genotype. Make a hypothesis about the genotype, and test it with a χ2 test. Show this test on a separate page.

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gladiator answered 1 year ago

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