If Cells of an Individual Contain the Same Set of Genes

question 15

Multiple Choice

If cells of an individual contain the same set of genes, how do these cells become different from each other during development?

• A) Different cell type-specific regulatory elements in DNA are created during development.
• B) Different cell type-specific regulatory elements in DNA are selectively lost during development.
• C) Differences in extracellular signals received by each cell lead to differences in the types of regulatory proteins present in each cell.
• D) Differences develop in promoter sequences that lead to different signals being produced by each type of cell.

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Definitions:

Hyperactivity

Excessive activity or movement, often lacking in direction or purpose, which can be a symptom of various disorders.

Anticonvulsant Medication

Drugs used to prevent or treat seizures by reducing the excessive electrical activity in the brain.

Carbamazepine

An anticonvulsant medication used mainly in the treatment of epilepsy and neuropathic pain, as well as bipolar disorder.

Phenytoin

A medication used to prevent seizures in conditions like epilepsy, by slowing down impulses in the brain that cause seizures.