Genetic VariationsGenetic Variations

Spring 2010Spring 2010

VocabularyVocabulary

Phenotype = Physical CharacteristicsPhenotype = Physical CharacteristicsGenotype = Genetic code for Genotype = Genetic code for

characteristicscharacteristicsDominant = stronger gene, always Dominant = stronger gene, always

shows (capital letter present)shows (capital letter present)Recessive = weaker gene, rarely shows Recessive = weaker gene, rarely shows

(must have two lower case letters)(must have two lower case letters)

GenderGender

Male Female

HairlineHairline

Widow’s Peak Straight Hairline

Hair TypeHair Type

Curly Hair Straight Hair

Eyelash LengthEyelash Length

Short Eyelashes Long Eyelashes

Eye ColorEye Color

Brown Eyes Light Eyes (Blue, green, hazel)

Eye ShapeEye Shape

Almond Shaped Round Shaped

Ear Lobe AttachmentEar Lobe Attachment

Attached Free Lobe

Nose SizeNose Size

Broad Nose Slender Nose

Nose ShapeNose Shape

Roman NoseStraight Nose

Lip SizeLip Size

Broad Lips

Thin Lips

DimplesDimples

Dimples No Dimples

FrecklesFreckles

FrecklesNo Freckles

Tongue RollTongue Roll

Can Roll Tongue

Cannot Roll Tongue

Hitchhiker’s ThumbHitchhiker’s Thumb

Hitchhiker’s Thumb

No Hitchhiker’s Thumb

Cleft ChinCleft Chin

Cleft Chin No Cleft Chin

Interlocking FingersInterlocking Fingers

Right thumb on top

Left thumb on top