In Soreflies (A Hypothetical Insect), the Dominant Allele, L, Is

question 41

Multiple Choice

In soreflies (a hypothetical insect) , the dominant allele, L, is responsible for resistance to a common insecticide called Loritol. Another dominant allele, M, is responsible for the ability of soreflies to sing like birds. A true-breeding mute, Loritol-resistant sorefly was mated to a true-breeding singing, Loritol-sensitive sorefly, and the singing, Loritol-resistant female progeny were test-crossed with true-breeding wild-type (i.e., mute, Loritol-sensitive) males. Of the 400 total progeny produced, 117 were mute and Loritol-resistant, 114 could sing and were Loritol-sensitive, 83 could sing and were Loritol-resistant, and 86 were mute and Loritol-sensitive. What will be the results of a chi-square test for independent assortment?

• A) 9.70 with three degrees of freedom
• B) 4.63 with three degrees of freedom
• C) 6.48 with four degrees of freedom
• D) 2.54 with one degree of freedom
• E) Because there are four classes of offspring, the genes must be assorting independently.

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