Assume That the Genes for Tan Body and Bare Wings

question 20

Multiple Choice

Assume that the genes for tan body and bare wings are 15 map units apart on chromosome II in Drosophila.Assume also that a tan-bodied,bare-winged female was mated to a wild-type male and that the resulting F₁ phenotypically wild-type females were mated to tan-bodied,bare-winged males.Of 1000 offspring,what would be the expected of wild-type offspring,and in what numbers would they be expected?

• A)75
• B)425
• C)50
• D)350
• E)8

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Definitions:

Joy/Happiness

A state of well-being and contentment characterized by feelings of pleasure and satisfaction.

Reactive, Difficult Infants

Infants who are particularly likely to react negatively to new situations or stimuli and are generally more challenging to soothe or calm.

Temperamental Traits

Temperamental traits refer to basic aspects of an individual’s personality, such as emotionality or sociability, which are believed to be genetically influenced and present from early life.

Environmental Influences

Factors within one's surroundings that affect behaviors, development, and growth.