Multiple Choice
Which of the following is an example of a mutation?
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15. Gene Expression
Mutations
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Which of the following phenotypes would most likely be the result of a Hox gene mutation?
A
A bacterium with antibiotic resistance
B
A fruit fly with legs growing in place of antennae
C
A mouse with a white coat instead of brown
D
A plant with variegated leaf patterns
Verified step by step guidance1
Understand that Hox genes are a group of related genes that control the body plan of an embryo along the head-tail axis. They are crucial in determining the identity and arrangement of body segments.
Recognize that mutations in Hox genes can lead to homeotic transformations, where one body part is replaced by another, often resulting in dramatic changes in the organism's morphology.
Consider the options given: A bacterium with antibiotic resistance, a fruit fly with legs growing in place of antennae, a mouse with a white coat instead of brown, and a plant with variegated leaf patterns.
Identify that the phenotype involving a fruit fly with legs growing in place of antennae is a classic example of a homeotic transformation, which is characteristic of a Hox gene mutation.
Conclude that the most likely phenotype resulting from a Hox gene mutation is the fruit fly with legs growing in place of antennae, as this directly involves a change in the body plan due to altered segment identity.
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