A student claims that the Y chromosome contains the sex-determining region gene, known as the SRY gene, which causes male fetuses to develop testes. Which of the following provides correct information about cell signaling that supports the claim?
A student claims that the Y chromosome contains the sex-determining region gene, known as the SRY gene, which causes male fetuses to develop testes.

The SRY gene produces a protein that binds to specific regions of DNA in certain tissues, which affects the development of these tissues.

The SRY gene produces a protein that binds to specific regions of DNA in certain tissues, which affects the development of these tissues.
A

The SRY gene produces a protein that deletes portions of the X chromosome in males so that male characteristics can develop.

The SRY gene produces a protein that deletes portions of the X chromosome in males so that male characteristics can develop.
B

The SRY gene produces an RNA segment that is exported from specific cells and targets the developing gonads.

The SRY gene produces an RNA segment that is exported from specific cells and targets the developing gonads.
C

The SRY gene is found only in tissues of the developing gonads.

The answer option which provides the correct information about cell signaling that supports the claim is: A. The SRY gene produces a protein that binds to specific regions of DNA in certain tissues, which affects the development of these tissues.

A cell is the fundamental (basic) structural, functional and smallest unit of life, that is found in any living organism.

Cell signaling can be defined as a fundamental process through which specific information (signals) are transmitted from the surface of a cell to the cytosol and finally to the nucleus, thereby, causing a change in the gene expression of a living organism.  

Basically, cell signaling is an ability of a living cell to do the following from and within its environment:

In Science, the four (4) main stages of cell signaling include:

1. Signal transmission.

2. Cell reception.

3. Signal transduction.

4. Cellular response.

In this context, cell signaling is described by the SRY gene (sex-determining region gene) produces a protein that binds to specific regions of deoxyribonucleic acid (DNA) in certain tissues, which affects the development of these tissues.

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The SRY gene produces a protein that binds to specific regions of DNA in certain tissues, which affects the development of these tissues.

Explanation:

In humans, there are two sex chromosomes namely: X and Y chromosomes. The Y chromosome contains a gene called sex-determining region gene or SRY gene. The SRY gene undergoes genetic expression to produce SRY proteins, which is responsible for the development of male sexual characteristics (testes) in humans.

The SRY protein achieves this by binding to a specific region on the DNA of reproductive tissues and regulates the expression of certain genes i.e. the SRY protein acts as a transcription factor. These regulation causes male fetuses to develop testes and inhibits the development of female sexual characteristics like uterus etc.

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