Information
Some fruit flies grow legs instead of antennae on their heads. This happens because of a mutation to a single gene called Antp. Some fruit flies have no eyes because they are missing a single gene called ey. The first scientists who learned about these variations were surprised to learn how ,begin underline,one,end underline, gene could affect an entire ,begin underline,organ,end underline,.
A picture shows a fruit fly and the locations of the fly's eyes and antennae.
A picture shows a fruit fly and the locations of the fly's eyes and legs that have grown in place of where antennae normally grow.
Question
Why did some scientists ,begin emphasis,doubt,end emphasis, that a single gene could affect an entire organ?
Answer options with 4 options
A.
One gene usually controls the structure of one cell, but an organ has a variety of different cells.
B.
One gene usually controls the structure of one strand of DNA, but an organ has many strands of DNA.
C.
One gene usually controls the structure of many types of tissues, but most organs only have one type of tissue.
D.
One gene usually controls the structure of one protein or part of a protein, but an organ needs large numbers of proteins.
1 answer
The correct answer is:
A. One gene usually controls the structure of one cell, but an organ has a variety of different cells.
This answer reflects the idea that organs are made up of multiple types of cells, and the initial skepticism about whether a single gene could impact the development or structure of an entire organ stems from this understanding.
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