Chromosome #17's "Q" gene controls the width of the mouth. The dominant gene imparts width. Place your baby's genotype for mouth width in the data table.

Chromosome #18's gene "J" adjusts the thickness of the lips. Place your baby's genotype for fullness of lips in the data table.   Back to Front Page Back to Teacher's Information Page Back to Student's Instructions and Materials Back to Genotype -> Phenotype Classroom Booklet