Students are given a set of chromosomes which may be from a male or a female. They build a karyotype to find out! Half of the kids will get boys and half the kids will get girls, but it will be a surprise! They cut out the chromosomes, match up the homologous pairs, and paste them in order on a line image of a baby. By looking at the sex chromosomes, they determine the gender of the baby they received. They then answer 10 analysis questions about their findings, chromosomes, chromosome numbers in humans, etc.
This activity runs very smoothly because the step-by-step instructions are CLEAR and easy to follow, and unlike some more advanced activities, the chromosome images are easy to tell apart.
You will need to print:
Instructions and Analysis Questions (1 page front/back)
Baby Image - 1 page (or students could simply paste chromosomes in notebook)
Karyotypes - (the boy/girl karyotypes fit on 1 page, you print 1/2 the copies, cut in half)
⭐ SAVE 30% with our DNA & Chromosomes ACTIVITIES BUNDLE for middle school! ⭐
Also check out our popular DNA/Chromosome Test (middle level).
Find more DNA & Chromosome resources in the DNA/Chromosomes Section of Our Store.
Find even more related resources in the Genetics & Heredity Section
Highlights of Our Related Resources:
Need something different?
Search all of our middle school science materials in Our Store!
Easy to follow, effective, and always standards-based.