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10 worksheets · Save $10.00 (20%) · prices shown inside the bundle

1. 01
   Nucleic Acid Structure Worksheet | Grade 9 Science Practice

   Grade 9 · Science · 30 Pages

   • Explain how DNA and RNA are built from nucleotide subunits and how their structures differ
   • Describe DNA double-helix features (antiparallel strands and complementary base pairing) and how this supports replication
   • Connect nucleic acid structure to genetic information flow from DNA to RNA to protein
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2. 02
   Gene Expression Worksheet | Grade 9 Science Activities

   Grade 9 · Science · 30 Pages

   • Explain how transcription converts DNA information into messenger RNA using promoters and terminators.
   • Describe how translation uses codons, transfer RNA, and the ribosome to build polypeptides.
   • Identify factors that can regulate gene expression at transcriptional and translational stages.
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3. 03
   Pedigree Analysis Worksheet | Grade 9 Science Activities

   Grade 9 · Science · 32 Pages

   • Identify inheritance patterns in pedigrees (autosomal dominant, autosomal recessive, X-linked, and mitochondrial).
   • Use affected and carrier status, sex distribution, and generation skipping to infer likely genotypes.
   • Apply basic probability ideas to estimate recurrence risk for relatives and explain how penetrance can affect interpretation.
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4. 04
   Biotech Ethics Worksheet Grade 9 Science Activities | TEKS Standards

   Grade 9 · Science · 31 Pages

   • Evaluate biotech applications by comparing benefits, risks, and societal impacts.
   • Analyze ethical concerns in genetic technologies, including privacy, consent, and equity.
   • Explain how risk–benefit assessments and public engagement can shape biotech regulation.
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5. 05
   Complex Inheritance Worksheet | Grade 9 Science Practice

   Grade 9 · Science · 32 Pages

   • Explain how epistasis and pleiotropy can change inheritance patterns compared with simple Mendelian ratios.
   • Describe how penetrance, expressivity, linkage, and environment can affect genotype-to-phenotype outcomes.
   • Analyze inheritance scenarios to predict why observed traits may not match expected Mendelian probabilities.
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6. 06
   DNA Replication Worksheet | Grade 9 Science Activities

   Grade 9 · Science · 32 Pages

   • Explain why DNA replication is semi-conservative and produces two DNA molecules with one original strand each.
   • Describe the main steps of DNA replication, including initiation, primer formation, and leading vs. lagging strand synthesis.
   • Connect replication fidelity and repair mechanisms to mutation rates and genome stability.
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7. 07
   Genetic Data Worksheet | Grade 9 Science Activities

   Grade 9 · Science · 34 Pages

   • Interpret genetic data using genotype and phenotype frequencies to infer inheritance patterns
   • Evaluate how molecular evidence (PCR markers, single nucleotide variants, sequencing reads) supports variant detection
   • Use basic statistics and comparisons to expected ratios to reason about linkage, heterozygosity, and selection
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8. 08
   Regulatory Mechanisms Worksheet Grade 9 Science TEKS Practice

   Grade 9 · Science · 30 Pages

   • Explain how regulatory DNA elements and proteins control gene transcription without changing DNA sequence
   • Describe how epigenetic modifications affect chromatin accessibility and gene expression
   • Use examples of feedback and regulatory networks to predict how cells respond to signals
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9. 09
   Inheritance Patterns Worksheet | Grade 9 Science Practice

   Grade 9 · Science

   • Explain Mendelian inheritance and predict phenotypic ratios for simple dominant–recessive traits.
   • Compare Mendelian and non-Mendelian inheritance patterns (incomplete dominance, codominance, multiple alleles, polygenic traits, sex-linked, imprinting, and mitochondrial transmission).
   • Identify how linkage between genes and environmental interactions can change expected inheritance outcomes.
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10. 10
    Biotech Applications Worksheet | Grade 9 Science Practice

    Grade 9 · Science · 30 Pages

    • Explain how common biotech tools (like DNA amplification, DNA separation, and genome editing) are used in research and real-world applications.
    • Connect specific laboratory techniques to outcomes such as diagnostics, forensics, and genetically modified organisms.
    • Evaluate ethical, legal, and societal considerations related to biotechnology.
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