Mississippi Science BIO.4.5
The Standard
- BIO.4
- Students will analyze and interpret evidence to explain the unity and diversity of life.
Use Darwin's Theory to explain how genetic variation, competition, overproduction, and unequal reproductive success acts as driving forces of natural selection and evolution.
2026 Mississippi College- and Career-Readiness Standards for Science · Adaptations and Evolution
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students explain how inherited differences, too many offspring, and limited resources lead to competition. They track which organisms leave more offspring and how a trait becomes more common across generations.
What Mastery Looks Like
- Given more beetles than hiding places, a student predicts which inherited color helps beetles avoid predators. They explain how those beetles could leave more offspring and become more common over several generations.
Common Misconceptions
- Students may say a beetle changes color because it needs camouflage. They may think useful traits appear only after conditions change, or that every beetle with a useful trait survives. Some confuse living longer with leaving more offspring.
How to Assess It
- Exit ticket: A drought leaves hard seeds, and more finches hatch than food can support. Explain why finches with inherited thick beaks may leave more offspring and how their share changes over three generations.
Lesson moves
Ways to Teach It
Use spoon, tweezers, and clothespin beaks to collect scarce beans; give successful feeders matching offspring cards for a second round.
Write why an inherited beak shape might spread when a drought leaves hard seeds and more chicks hatch than food can support.
Deal beetle trait cards and habitat cards; have teams predict which beetles leave more offspring, then swap habitats and repeat.
Give students insect counts before and after pesticide spraying; ask them to predict the share of resistant offspring next season.
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Related Standards
- L.8.4A.1
Use various scientific resources to analyze the historical findings of Charles Darwin to explain basic principles of natural selection.
- FB.5.4
Investigate how biological adaptations and genetic variations of traits in a population enhance the probability of survival in an environment (natural selection...
- GEN.5.2
Explain how natural selection acts upon genetic variability within a population and may lead to changes in allelic frequencies over time and evolutionary change...
- L.8.4A.2
Construct explanations about how genetic factors and environmental factors (e.g., food intake, interactions with other organisms, etc.) lead to the growth, surv...
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