SCI-MS.LS3.02

Life Science Logo7th Grade (SCI) Life Science Standards
[LS3] Heredity: Inheritance and Variation of Traits

SCI-MS.LS3.02 Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation.

Clarification Statement: Emphasis is on using models such as Punnett squares, diagrams, and simulations to describe the cause and effect relationship of gene transmission from parent(s) to offspring and resulting genetic variation. (mitosis, meiosis, and binary fission)
Disciplinary Core Ideas
LS1.B: Growth and Development of Organisms Organisms reproduce, either sexually or asexually, and transfer their genetic information to their offspring (secondary).
LS3.A: Inheritance of Traits Variations of inherited traits between parent and offspring arise from genetic differences that result from the subset of chromosomes inherited. LS3.B: Variation of Traits In sexually reproducing organisms, each parent contributes half of the genes acquired (at random) by the offspring. Individuals have two of each chromosome and hence two alleles of each gene


Student Learning Targets:

Knowledge Targets

  • I can recognize or recall specific terminology  (dominant, recessive, heterozygous, homozygous, purebred, hybrid, allele, genes, DNA, chromosome, asexual reproduction, mitosis, phases of cell cycle (interphase, prophase, metaphase, anaphase, telophase, and cytokinesis), spindle fibers, sexual reproduction, meiosis, Punnett square, pedigree, inheritance, fertilization, zygote, haploid, diploid, sperm, egg, daughter cells, genotype, phenotype, trait). 

Reasoning Targets

  • I can compare and contrast meiosis and mitosis.

Skills (Performance) Targets

  • I can draw and label the phases of the cell cycle (in a body cell). 

Product Targets

  • I can create a Punnett square and describe the outcome of the cross.

Proficiency Scale

The Student can ...
1 Beginning
... with help, demonstrate a partial understanding of some of the simpler details and processes (Score 2.0 content) and some of the more complex ideas and processes (Score 3.0 content).
  • descriptors
2 Developing
... demonstrate no major errors or omissions regarding the simpler details and processes but exhibits major errors or omissions regarding the more complex ideas and processes (Score 3.0 content).
  • recognize or recall specific terminology.
Vocabulary: dominant, recessive, heterozygous, homozygous, purebred, hybrid, allele, genes, DNA, chromosome, asexual reproduction, Mitosis, phases of cell cycle (Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis), spindle fibers, sexual reproduction, Meiosis, punnett square, pedigree, inheritance, fertilization, zygote, haploid, diploid, sperm, egg, daughter cells, genotype, phenotype, trait
3 Proficient
“The Standard.”
... demonstrate no major errors or omissions regarding any of the information and processes that were end of instruction expectations.
  • draw and label the phases of the cell cycle (in a body cell) emphasizing the movement of chromosomes.
  • compare and contrast Meiosis and Mitosis.
  • create a Punnett square and describe the outcome the cross.
  • compare the results of asexual and sexual reproduction in different organism
Sample Activity:
students make a model of mitosis and relate the starting genetic material to the ending genetic material.
students use a model of meiosis to show how sexual reproduction results in offspring with a unique genetic combination
students use Punnett squares to model the gene combinations possible from sexual reproduction.

4 Advanced
... demonstrate in-depth inferences and applications regarding more complex material that go beyond end of instruction expectations.
  • descriptors

Click Here to view the Proficiency Scale

Resources

Vocabulary

  • dominant
  • recessive
  • heterozygous
  • homozygous
  • purebred
  • hybrid
  • allele
  • genes
  • DNA
  • chromosome
  • asexual reproduction
  • mitosis
  • phases of cell cycle
    (interphase, prophase, metaphase, anaphase, telophase, and cytokinesis)
  • spindle fibers
  • sexual reproduction
  • meiosis
  • Punnett square
  • pedigree
  • inheritance
  • fertilization
  • zygote
  • haploid
  • diploid
  • sperm
  • egg
  • daughter cells
  • genotype
  • phenotype
  • trait

Websites

  • Chapter 4 of Life Science textbook 
  • Title of website with a URL to open in a new window

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