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Chromosomes, Genes & DNA

CONCEPTUAL
Science›Ecosystems & Habitats|Ages 12—13|ID: mt_6aJUzBYGNs

Describe the relationship between chromosomes, genes, and DNA in heredity, including the double helix structure of DNA and the historical roles of Watson, Crick, Franklin, and Wilkins

Mastery Evidence

  • Explains the hierarchy: DNA → gene → chromosome → nucleus → cell
  • Describes what a gene is and what it codes for
  • States that human body cells contain 46 chromosomes in 23 pairs
  • Describes the contributions of Watson, Crick, Franklin, and Wilkins to the discovery of DNA structure

Assessment Prompt

“If [child] was asked what DNA actually is and where it is in the body, could they explain the relationship between DNA, genes, and chromosomes — and say roughly how many chromosomes a human cell has?”

Curriculum Standards2 alignments

MS-LS3-1Next Generation Science Standards (NGSS) Middle Schoolcodes only
Standard code — full text not included in this dataset.
KS3.Sci.Bio.Adaptation.5The national curriculum in England
Model of chromosomes, genes and DNA

a simple model of chromosomes, genes and DNA in heredity, including the part played by Watson, Crick, Franklin and Wilkins in the development of the DNA model

Science · KS3

Prerequisites1

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  • Cells Under the Microscope hard

    DNA is housed in the nucleus of cells — the cell as fundamental unit must be understood before studying what's inside the nucleus

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