In Flower Beetles, Pygmy (Py)is Recessive to Normal Size (Py⁺)

question 51

Multiple Choice

In flower beetles, pygmy (py) is recessive to normal size (py⁺) , and red color (r) is recessive to brown (r⁺) .A beetle heterozygous for these characteristics was test crossed to a beetle homozygous for pygmy and red.The following are progeny phenotypes from this testcross: Carry out a series of chi-square tests to determine if there is equal segregation of alleles at the py locus.What is the CORRECT chi-square value and how many degree(s) of freedom should be used in its interpretation?

• A)0)16 with one degree of freedom
• B)0)16 with three degrees of freedom
• C)0)48 with one degree of freedom
• D)0)48 with two degrees of freedom
• E)4)56 with one degree of freedom

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Definitions:

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