Genetics Games!

Seventh-graders, here are some games to help you build your understanding of genetics.

Also, here is an extra credit opportunity! Take a quiz to help you practice using Punnett squares. At the end of the quiz, after you see your results, there is an option at the bottom of the page to email the results to your teacher. Enter my email address, elewing@cps.edu, and receive one point of extra credit for every question you get correct. This offer is good through December 4, 2009.

To help you through these activities, remember these vocabulary words:
  • allele: an alternate form that a gene can have for a single trait. For example, the trait of eye color has an allele for blue eyes and an allele for brown eyes.
  • dominant: a trait that is "stronger" than another trait, so that it covers it up, or dominates it
  • recessive: a trait that "hides," so that it may not be visible even if the person carries it in their genes
  • genotype: the genetic blueprint of an organism
  • phenotype: the way an organism's genes are displayed outwardly; the traits you can actually observe
  • heterozygous: having two different alleles for a trait (for example, Tt, Bb, Gg)
  • homozygous: having two of the same alleles for a trait (for example, tt, BB, GG, aa)