While Doing Fieldwork in Madagascar, You Discover a New Dragonfly

question 44

Multiple Choice

While doing fieldwork in Madagascar, you discover a new dragonfly species that has either red (R) or clear (r) wings. Initial crosses indicate that R is dominant to r. You perform three crosses using three different sets of red-winged parents with unknown genotype and observe the following data: $$\begin{array} { | l | l | } \hline \text { Cross } & \text { Phenotypes } \\\hline 1 & 72 \text { red-winged, } 24 \text { clear-winged } \\\hline 2 & 12 \text { red-winged } \\\hline 3 & 96 \text { red-winged } \\\hline\end{array}$$ Which cross is likely to have at least one parent with the genotype RR?

• A) cross 1
• B) cross 2
• C) cross 3
• D) crosses 1 and 2
• E) crosses 2 and 3

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