Science project

Do Certain Physical and Mental Traits Run in the Family?

Research Questions:

  • What is the 'law of segregation'?
  • What is the 'law of independent assortment'?

Genes are passed down from parent to offspring. However, the characteristics of these genes may or may not be expressed in the offspring. Offspring can instead act as carriers of the gene, therefore passing it down (and skipping) generations in the family. This explains why you may have your grandmother's nose, but your mom does not.


  • Test subjects of the same families
  • Pen and paper for notes

Experimental Procedure:

  1. Study the features of people in the same family. Are any distinct? Do you see widow's peaks? Attached earlobes? Free earlobes?
  2. After study the physical features, move on to ask about personality. Ask for different opinions about this. Do you see any similarities between personality and intelligence?
  3. Record your results.

Terms/Concepts: Genes (dominant and recessive); DNA; Hereditary; Gregor Mendel; Alleles; Purebred & Hybrid


Disclaimer and Safety Precautions provides the Science Fair Project Ideas for informational purposes only. does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against that arise thereof. In addition, your access to's website and Science Fair Project Ideas is covered by's Privacy Policy and site Terms of Use, which include limitations on's liability.

Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.

Add to collection

Create new collection

Create new collection

New Collection


New Collection>

0 items