Connect development influences

Supplied materials

• All measurements and observations below are supplied classroom examples. They are not data from actual learners or a claim about a particular real site.
• Paper or a browser document for a labeled drawing, table or explanation.
• Worked problem inputs: Same variety grows differently across conditions; another variety reacts differently to the same change. Identify an interaction.
• Assessment case 1: A pigment variant has different observed effects under two supplied temperatures. What follows? Which inference or prediction is best supported?
• Assessment case 2: Which scientific label fits the specifically described step or feature? Supplied case: Water availability alters growth.
• Assessment case 3: Which scientific label fits the specifically described step or feature? Supplied case: Same variant behaves differently by environment.
• Assessment case 4: Which scientific label fits the specifically described step or feature? Supplied case: Two organisms differ with no controlled comparison.
• Assessment case 5: Which scientific label fits the specifically described step or feature? Supplied case: Temperature changes supplied development timing.
• Assessment case 6: Two genotypes respond differently to the same light change. What inference fits? Which inference or prediction is best supported?

Learn the idea

Inherited information and environment both affect development. An exposure association alone does not prove cause. Supplied comparisons identify what is measured and what remains unresolved.

Genetic contribution means inherited information affects development. Environmental contribution means conditions affect development. Interaction means effect depends on both information and conditions. Unresolved means record cannot distinguish competing explanations.

For the supplied mechanism problem, Same variety grows differently across conditions; another variety reacts differently to the same change. Identify an interaction. A genotype-by-environment interaction is plausible when the condition’s effect depends on the inherited background. The pattern needs matched comparisons and does not prove a single gene is responsible.

1. Read the supplied problem and mark the structures, processes or quantities named: Same variety grows differently across conditions; another variety reacts differently to the same change. Identify an interaction.
2. Draw the relevant boundary, pathway or comparison and label it using the scientific ideas above.
3. Write a causal explanation or calculation, showing how each observation supports the result.
4. Compare your reasoning with the worked solution; name a condition that would change or limit the inference.

Check your reasoning

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Take it further

New comparison: variety A gains 3 model growth units with extra water; variety B gains 1 under the same change. Expected: the response differs by inherited background in this supplied model; a gene-by-environment interaction is a candidate explanation, not proof of one gene.

Nothing here is saved to an account or sent to a teacher. The answer download includes your current choice and any checked feedback. It does not include choices from the separate More practice section. Download that section separately.