Each student is given a different karyotype. Based on that karyotype, and the table of mutations, the student draws a beetle with the listed mutations. There are 8 different karyotypes so you will have 8 differently mutated beetles. This activity covers karyotypes, mutations, genotype, and phenotype. This activity supports Grade Seven California State Science Standard 2D - Students know plant and animal cells contain many thousands of different genes and typically have two copies of every gene. The two copies (or alleles) of the gene may or may not be identical, and one may be dominant in determining the phenotype while the other is recessive.