Genetics Phenotype Survey

Download Genetics Spreadsheet File | Mitosis

Identify chromosomes (karyotyping)

Characteristic: d=dominant / r=recessive Personal Phenotype and Genotype Number w/trait % of Class with Trait
Hairline
  • widow's peak (d)
  • continuous hairline (r)


Earlobes
  • unattached (d)
  • attached (r)


Hair on middle segment of finger (dorsal side)
  • present (d)
  • absent (r)


Interlocking fingers
  • left thumb over right (d)
  • right thumb over left (r)


Hitchhiker's thumb
  • top segment of thumb straight (d)
  • top segment of thumb can be bent back (r)


Bent little finger
  • little finger bends toward ring finger (d)
  • little finger straight (r)


U-shaped tongue
  • able to roll tongue in trough-like shape (d)
  • unable to roll tongue (r)


PTC taster
  • able to taste PTC on sample paper (d)
  • unable to taste (r)


Thiourea taster
  • able to taste thiourea on paper (d)
  • unable to taste (r)


Sodium benzoate taster
  • able to taste (d)
  • unable to taste (r)


Colorblindness
  • red-green vision (d)
  • red-green blindness (r)


Attached earlobes

 

 Unattached earlobes
tongue-roller Non -tongue roller
hitch-hiker's thumb straight thumb
       

 

 
VISUAL ACUITY: A person who has sufficient visual acuity should see the number twelve in the circle on the left whether or not they have normal color vision. I   COLOR BLINDNESS: A person with normal color vision sees a number seven in the circle on the left. Those who are color blind usually do not see any number at all.
 
RED-GREEN COLORBLINDNESS: People with red-green color blindness see either a three or nothing at all. Those with normal color vision see an 8.   PROTANOPIA & DEUTERANOPIA
Those with normal vision see the number thirty-five in the circle above. A person with protanopia sees tonly he number five. A person with deuteranopia sees the number three. People who are partially color blind will see both numbers but one more distinctly than the other.