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**Standard(s): **
[SC2015] LSC7 (7) 12 :

[SC2015] BIOL (9-12) 11 :

[MA2015] AL1 (9-12) 47 :

12 ) Construct and use models (e.g., monohybrid crosses using Punnett squares,
diagrams, simulations) to explain that genetic variations between parent and
offspring (e.g., different alleles, mutations) occur as a result of genetic
differences in randomly inherited genes located on chromosomes and that
additional variations may arise from alteration of genetic information.

[SC2015] BIOL (9-12) 11 :

11 ) Analyze and interpret data collected from probability calculations to
explain the variation of expressed traits within a population.

a. Use mathematics and computation to predict phenotypic and genotypic
ratios and percentages by constructing Punnett squares, including using both
homozygous and heterozygous allele pairs.

b. Develop and use models to demonstrate codominance, incomplete dominance,
and Mendel's laws of segregation and independent assortment.

c. Analyze and interpret data (e.g., pedigree charts, family and population
studies) regarding Mendelian and complex genetic disorders (e.g., sickle-cell
anemia, cystic fibrosis, type 2 diabetes) to determine patterns of genetic
inheritance and disease risks from both genetic and environmental factors.

[MA2015] AL1 (9-12) 47 :

47 ) Understand that two events A and B are independent if the probability of A and B occurring together is the product of their probabilities, and use this characterization to determine if they are independent. [S-CP2]

In this lesson, students will use the concept of finding the probability of an offspring having more than one genetic trait simultaneously. They will use a shortcut method to find the probability and they will use a Punnett square calculator to check their answers. This lesson can be used to teach genetics in a science classroom or a practical "real world" application of probability calculations in a math classroom.

*This activity was created as a result of the GAP Resource Summit.*