Male and Female Chromosomes

Genotype vs. Phenotype Phenotype – physical characteristics Hitchhiker's thumb Genotype – The genetic makeup Straight Curved HH or Hh hh Allele – One member of a pair of genes

Dominant vs. Recessive Dominant – An allele that produces the same phenotypic effect whether inherited with a homozygous or heterozygous allele H Recessive – designating an allele that does not produce a characteristic effect when present with a dominant allele h

Trait: g h h h HHH hhh h h h g Father's Genotype - h h Mother's Genotype - H h Diagram that is used to predict the probability that and individual will have a specific trait. Punnett Square

Trait: Hitchhikers thumb g h h h HHH hhh h h h g

Punnett Square Trait: Hitchhikers thumb g h h h HHH hhh h h h g

Punnett Square Trait: Hitchhikers thumb Homozygous – Same alleles Heterozygous – Different alleles g g H H H HHH hhh h h h

Punnett Square Trait: Hitchhikers thumb g h h h HHH Hhh h h h g

Punnett Square Trait: Hitchhikers thumb g h h h HHH HHH h h h g

Traits to Check Trait Dominant Phenotype Dominant GenotypeRecessive Phenotype Recessive Genotype 1. Hair color brown, black, or red hair LL or Llblond hair ll 2. Hair type naturally curly TT or Ttnaturally straight tt 3. Tongue curling can curl tongue CC or Cc cannot curl tongue cc 4. Mid-digital hair hair MM or Mmno hair mm 5. Pigmented iris eyes not blue EE or Ee blue eyes ee 6. Widow's peak peak WW or Ww no peak ww 7. Bent finger little finger curves BB or Bb little finger straight bb 8. Cheek dimplesdimples DD or Ddnot dimplesdd 9. Face frecklesfreckles FF or Ffno frecklesff 10. Hitchhiker's thumbstraight HH or Hhcurvedhh 11. Ear lobes free AA or Aaattachedaa 12. Hallux length (toes)long 2nd toe UU or Uushort 2nd toeuu 13. Cleft chincleft NN or Nnno cleftnn 14. Lips Thin lips PP or Pp Broad lips pp 15. Nose"Roman" Nose RR or RrStraight Noserr

“Mother”: _____________________________ “Father”: ___________________________ Per_____

Various Traits “Roman” Nose Cleft Chin Cheek Dimples Hitchhiker's thumb Attached lobes Hallux length