7th 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
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:
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).
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).
I can create a Punnett square and describe the outcome of the cross.
The Student can ...
... 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).
... 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).
“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.
... demonstrate in-depth inferences and applications regarding more complex material that go beyond end of instruction expectations.