Free Printable WorksheetScienceGrade 10Science CurriculumBIO.10.48

10.48 DNA Replication and Chromosome Duplication Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Biology Science worksheet provides structured practice on 10.48 DNA Replication and Chromosome Duplication. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

DNA Replication and Chromosome Duplication: Students connect semi-conservative DNA replication to chromosome duplication before cell division and the conservation of genetic information. Rigor range: standard concept checks through honors/Pre-AP/AP-ready chromosome, regulation, and developmental consequence analysis. Aligned to FreeK12Practice High School Biology Curriculum Crosswalk (NGSS/NRC Framework; CCSS Literacy and Mathematics; AP Biology enrichment; Texas TEKS Biology; Florida NGSSS/CPALMS Biology; Virginia SOL Biology; California NGSS and New York State Science Learning Standards) BIO.10.48 - DNA Replication and Chromosome Duplication: National: NGSS HS-LS1-1; HS-LS1-4; HS-LS3-1; CCSS RST.9-10.2; RST.9-10.7; AP Biology IST-1, IST-3. State frameworks: TX TEKS BIO.6A, BIO.7A; FL NGSSS SC.912.L.16.3, SC.912.L.16.14; VA SOL BIO.3c, BIO.5a; CA NGSS/NYSSLS HS-LS1-1, HS-LS1-4, HS-LS3-1.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Biology

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 10.48 DNA Replication and Chromosome Duplication skill assessments:

Problem 1Difficulty: Mastery

Which integrated explanation best links the molecular and chromosome-level events in this skill?

ARandom base pairing creates new chromosomes, and daughter cells repair the genome after division.

BChromosomes duplicate by protein translation, and DNA is copied only after cytokinesis.

CSister chromatids are unrelated homologs, so replication is not needed for cell division.

DComplementary base pairing copies DNA strands, producing sister chromatids that can be separated to conserve genetic information.

Solution & Explanation:The key connection is that molecular DNA replication produces duplicated chromosomes. Accurate chromatid separation then helps daughter cells inherit conserved genetic information.

Problem 2Difficulty: Mastery

Use the inhibitor graph to answer the question. Cells treated with a topoisomerase inhibitor show fork speed dropping sharply while helicase remains present at forks. What is the best explanation?

ATopoisomerase normally builds RNA primers for every Okazaki fragment.

BTopoisomerase is the centromere that holds sister chromatids together.

CUnrelieved DNA twisting ahead of the fork can slow replication even when helicase is present.

DHelicase can finish chromosome duplication without template strands.

Solution & Explanation:Topoisomerase relieves torsional strain. If it is inhibited, the fork can slow because overwinding ahead of helicase becomes a barrier.

Problem 3Difficulty: Mastery

A signaling pathway detects long stretches of single-stranded DNA at stalled replication forks. Why is this signal important?

AIt proves that DNA replication has already finished perfectly.

BIt can activate a replication-stress response before chromosomes enter mitosis incomplete.

CIt tells ribosomes to divide the cytoplasm.

DIt converts homologous chromosomes into sister chromatids.

Solution & Explanation:Long single-stranded regions can indicate stalled replication. A stress response can pause the cycle and promote repair or fork restart.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Biology Science students. It aligns with educational standard BIO.10.48 (National: NGSS HS-LS1-1; HS-LS1-4; HS-LS3-1; CCSS RST.9-10.2; RST.9-10.7; AP Biology IST-1, IST-3. State frameworks: TX TEKS BIO.6A, BIO.7A; FL NGSSS SC.912.L.16.3, SC.912.L.16.14; VA SOL BIO.3c, BIO.5a; CA NGSS/NYSSLS HS-LS1-1, HS-LS1-4, HS-LS3-1.).