MS.LS3.1: Develop and use a model to describe why structural changes to genes…
Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism.
The South Dakota Science Standards (2024) outcome MS.LS3.1 (Life Sciences) for Grades 6–8 says: “Develop and use a model to describe why structural changes to genes (mutations) located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: South Dakota Science Standards (2024).
Genes and Traits: Heredity and Punnett Squares Grades 7–8
Why you look like your family but not exactly, how two purple-flowered pea plants can have a white-flowered one, what Gregor Mendel really counted, and what happens when a gene changes. Four no-materials lessons with printed allele cards, Punnett squares, Mendel's own data and a real gene to decode.
- What happens when a gene changes? 45–60 min
Students decode the first words of the real human haemoglobin gene, apply five mutation cards and see which changes alter the protein. Then they stand in the corner of the room that matches each real case: harmful, neutral, helpful or it depends. They explain how a change in a gene can change a protein and a trait.
Printable practice for MS.LS3.1
- Genes and Traits: Heredity and Punnett Squares workbook included with the unit
1 word wall, 1 English-support page, 1 practice page, 1 reading, 1 unit review, 1 unit test, with answer keys.
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Compared with NGSS: MS-LS3-1.
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