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In genetic notation, how is a recessive allele typically represented?
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12. Meiosis
Genes & Alleles
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Which phrase correctly defines a gene?
A
A molecule that carries oxygen in the blood
B
A structure that organizes the cell's activities
C
A type of lipid found in cell membranes
D
A segment of DNA that codes for a specific protein or function
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Understand that a gene is a fundamental unit of heredity in living organisms.
Recognize that genes are composed of DNA, which is a molecule that contains the instructions an organism needs to develop, live, and reproduce.
Identify that a gene is specifically a segment of DNA that contains the necessary information to produce a functional product, typically a protein.
Acknowledge that proteins are crucial for various cellular functions and structures, and genes provide the blueprint for their synthesis.
Conclude that the correct definition of a gene is 'a segment of DNA that codes for a specific protein or function,' distinguishing it from other molecules or structures mentioned in the options.
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