This is a three page sex linked traits worksheet to practice sex linked Punnett squares. Includes a short reading passage describing how sex linked traits are inherited.
Purchase includes a printable PDF file with answer key. On page 2 of this sex linked traits worksheet you will find a link to a student friendly Google Slide version of this file. You will be able to copy this file and use it with Google Classroom or any other paperless initiative.
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I find that teaching Punnett squares and inheritance is one of the best parts of my job as a middle school science teacher. It’s one time in our curriculum where students are doing instead of memorizing, and I love seeing the joy on their faces when things start to make sense!
I teach monohybrid crosses as a whole group lesson, and then I have a self paced unit set up that students work through on their own. The progression I use is:
- Monohybrid Crosses
- Codominance, Incomplete Dominance, Blood Types
- Sex Linked Traits
- Dihybrid Crosses
For each, I have an introductory video (something like Khan Academy). A practice worksheet such as this one, and then a quiz. I usually use Quizizz. In order to move on to the next level, students must achieve 80% on the quiz.
As the unit progresses, I generally find that students group themselves based on ability level and work together to understand the new Punnett squares and to pass the quiz. This frees me up to move around the room. Generally, I spend the majority of my time with the students who are still struggling to grasp monohybrid crosses. Occasionally I sit with the more advanced groups and give them a quick rundown of their new challenge.
At the end of about 2 weeks, I assess the students only up to the level that they were able to master. I’ve found this to be one of my students’ favorite units and one that allows them to feel empowered instead of rushed as they (for the first time in many of their lives) finally have as much time as they need to work through a skill.