Assume That Investigators Crossed a Strain of Flies Carrying the Dominant

question 34

Multiple Choice

Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body.The F₁ Lobe females were then backcrossed with homozygous smooth abdomen,straw body males,the following phenotypes were observed:

• A)smooth,Lobe,straw
• B)it is impossible to tell
• C)Lobe,smooth,straw
• D)smooth,straw,Lobe
• E)Lobe,straw,smooth

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Definitions:

Lithium Carbonate

A chemical compound used as a mood stabilizer in the treatment of bipolar disorder and other psychiatric conditions.

Nausea

A feeling of sickness with an inclination to vomit.

Antiemetic

is a type of medication used to prevent or treat nausea and vomiting caused by various conditions, including chemotherapy and motion sickness.

Lithium

A chemical element used as a medication to treat bipolar disorder and help stabilize mood.