Reporting Category: Life Science Standard: 8 - Recognize that hereditary information is contained in genes located in the chromosomes of each cell. A human cell contains about 30,000 different genes on 23 different chromosomes.
The diagram below represents 23 pairs of structures taken from the nucleus of a human body cell.
Identify the structures shown in the diagram.
Identify the information that is contained within these structures.
Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.
Explain why the structures are in pairs.
Scoring Guide and Sample Student Work Select a score point in the table below to view the sample student response.
The response demonstrates a thorough understanding that hereditary information is contained in genes located in the chromosomes of each cell. The response correctly identifies chromosomes and the information that they contain, and clearly describes how they compare to the structures in the nucleus of another body cell from the same person. The response also clearly explains why chromosomes are in pairs.