Free Printable WorksheetScienceGrade 6Science CurriculumSCI.6.96

6.96 Asexual and Sexual Reproduction and Variation Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 6 Science worksheet provides structured practice on 6.96 Asexual and Sexual Reproduction and Variation. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Asexual and Sexual Reproduction and Variation - Which statement best describes asexual and sexual reproduction and variation? (NGSS MS‑LS3‑2)

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

Grade 6

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 6.96 Asexual and Sexual Reproduction and Variation skill assessments:

Problem 1Difficulty: Mastery

Four statements are written on the board: 1) Asexual reproduction usually produces genetically similar offspring. 2) Sexual reproduction usually produces more genetic variation in offspring. 3) Variation can be acted on by natural selection. 4) New alleles typically come from mutation.

Which choice best combines these ideas into one accurate conclusion?

ABecause asexual reproduction is faster, it always leads to more evolution than sexual reproduction.

BSexual reproduction creates new alleles every time, so mutation is unnecessary.

CAsexual reproduction prevents natural selection because all offspring are identical forever.

DSexual reproduction usually increases the variety of allele combinations, and mutations create new alleles; together these provide heritable variation that natural selection can act on.

Solution & Explanation:Sexual reproduction mostly reshuffles alleles into many combinations, while mutation creates new alleles. Both contribute to heritable variation, which is required for natural selection and evolution.

Problem 2Difficulty: Mastery

During meiosis, homologous chromosomes are supposed to separate so each gamete gets one of each pair. In one individual, the chromosomes do not separate correctly.

Which outcome is most likely for gametes made by that individual?

AAll gametes will have exactly the correct number of chromosomes.

BGametes will have no DNA at all.

CSome gametes will have too many or too few chromosomes, which can cause major problems after fertilization.

DAll gametes will become clones of the parent.

Solution & Explanation:If chromosomes fail to separate (nondisjunction), gametes can end up with extra or missing chromosomes. After fertilization, this often causes developmental issues.

Problem 3Difficulty: Mastery

A parasite infects a host species. The parasite spreads fastest in hosts with the most common genotype.

How could sexual reproduction help the host population in this situation?

ASexual reproduction makes all hosts identical, so the parasite cannot recognize them.

BSexual reproduction creates varied offspring; some may have rare genotypes that the parasite infects less effectively.

CSexual reproduction prevents parasites from reproducing.

DSexual reproduction removes all mutations from the host population.

Solution & Explanation:If parasites target common genotypes, producing genetically varied offspring increases the chance that some hosts have rarer genotypes that are harder for the parasite to infect.

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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 Grade 6 Science students. It aligns with educational standard SCI.6.96 (Grade 6 science practice and review on asexual and sexual reproduction and variation.).