Saturday, January 14, 2012

bow dominant and recessive trait

Biology BOW
Explain the difference between a dominant and a recessive trait in YOUR OWN WORDS. Give
an example of a phenotype that is from a dominant trait and one that is recessive. Include pictures for each.


A dominant trait is stronger than recessive trait.  Therefore, the recessive trait will only present when the dominant trait is totally absent.


Examples:
DOMINANT TRAITS------vs:------RECESSIVE TRAITS

EYE COLORING
brown eyes, vs: grey, green, hazel, blue eyes

VISION
farsightedness-----vs:normal-vision
normal vision-------vs:nearsightedness
normal vision-------vs:night-blindness
normal vision-------vs:color-blindness*

HAIR
D to ----R
dark hair------------vs:blonde, light, red hair
non-red hair--------vs:Red Hair
curly hair------------vs:Straight Hair
full head of hair-----vs:Baldness*
widow's peak-------vs:Normal Hairline

FACIAL FEATURES
D to -----------R
dimples------------------vs:no dimples
unattached earlobes--vs:attached earlobes
freckles-------------------vs: no freckles
broad lips-----------------vs:thin lips

APPENDAGES
extra digits-------------vs:normal number
fused digits-------------vs:normal digits
short digits--------------vs:normal digits
fingers lack 1 joint------vs:normal digits
limb dwarfing------------vs:normal proportion
clubbed thumb----------vs:normal thumb
double-jointedness------vs:normal joints

for eye colors:

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