Question

Which of the following statements about pattern formation are true? Select the four statements that are true.

Answer 1

The correct ones are:

• Differential gene expression affects the developmental process in animals.
• Positional information controls pattern formation.
• Homeotic genes code for transcription factors that control the development of segment-specific body parts.
• Cells receive molecular signals that communicate their position in relation to other cells.

Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product, allowing it to produce end products such as protein or non-coding RNA and, as a result, affect a phenotype.

A homeotic gene is any of a group of genes that control the pattern of body formation in organisms during early embryonic development. These genes encode proteins known as transcription factors, which direct the formation of various body parts.

Molecular signaling refers to molecules that transmit information between cells in the body. However, the molecular properties of signaling molecules can vary greatly.

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