Suppose That You Examine a Vial of 100 Flies That

question 47

Multiple Choice

Suppose that you examine a vial of 100 flies that are all offspring from a single genetic cross. Also suppose that the only females you see present are red-eyed, but the males you see present are both red-eyed and white-eyed. The allele for red eye colour (X^w+) is dominant over the allele for white eye colour (X^w) . Which of the following describes the genotypes of the parents?

• A) X^w+X^w; X^w+Y
• B) X^wX^w; X^w+Y
• C) X^w+X^w; X^wY
• D) X^w+X^w+; X^w+Y

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Definitions:

Photosynthesis

The method through which certain green plants and other entities utilize sunlight to create nutrients from carbon dioxide and water, with oxygen being emitted as an incidental product.

Gas Exchange

The biological process through which different gases (like oxygen and carbon dioxide) are transferred in opposite directions across an organism's respiratory surfaces.

Nutrient Absorption

The process by which substances such as vitamins, minerals, and other nutrients are taken up into the body, usually within the intestines.

Food Storage

The practice of keeping and preserving food substances in a safe and usable condition for future consumption.