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Engaging and effective middle school NGSS heredity activity! In this worksheet, students are given the chromosomes of 4 children. They must examine the alleles on each chromosome to determine each child's genotype and phenotype. They then pick one child to draw, which demonstrates understanding of phenotype. To extend students' thinking, they are asked to use the alleles from the children to predict the chromosome pairs of the parents. They report their thinking about the parent's chromosomes in a Claims/Evidence/Reasoning format. An "extended thinking" question requires students to think a little deeper about genetics as they answer the question "Is this [their claim] the only possibility for the parents' genotypes?"
The format of this worksheet is designed to mirror the way these types of questions have been asked on standardized tests in the past. Overall, this worksheet is a wonderful review of dominant/recessive, genotype/phenotype and chromosomes.
INCLUDES AN ANSWER KEY
Also see our best-selling middle school Asexual and Sexual Reproduction Test
and our Heredity and Genetics Test.
Find more related resources in the Genetics & Heredity Section
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