For this biology worksheet, 9th graders identify which seed color is dominant in the given chart and explain why it is. Then they create a Punnett square showing the alleles of the parent plants and first generation of offspring.

In this biology learning exercise, 9th graders describe how two alleles can produce three phenotypes. Then they create a Punnett square showing the possible offspring of red and white cattle. Students also determine the genotypes and...

Young scholars explain the difference between dominant and recessive genes, identify what causes differences in the traits of parents and their offspring, and explain how sex is determined. They will also improve their reading and...

Scholars become detectives and use science to solve a crime! A complete unit introduces DNA and includes hands-on activities that have learners model DNA and extract it from different food types. A culminating activity challenges...

For this biology worksheet, middle schoolers use the information given to complete each of the questions. They indicate whether each genotype is heterozygous or homozygous. Students also complete the Punnett square to illustrate the...

In this biology learning exercise, 9th graders create a Punnett square to show the possible offspring of a carrier female and a normal male for color blindness. Then they draw a pedigree for the family and indicate whether the daughter...

For this biology worksheet, students use the information given about genetics and Sponge Bob to complete each section of the sheet. They identify and explain incomplete dominance and use it to help them complete the questions that follow.