A classmate has a widow's peak.
Is the dominant or recessive phenotype for this trait being displayed? What genotype(s) could be determining the trait? Use the letter W

Question

A classmate has a widow's peak.
 Is the dominant or recessive phenotype for this trait being displayed? What genotype(s) could be determining the trait? Use the letter W

zpupster · Answer

from here: http://biol210a.oceanhugger.com/BIOL210A/FA11past_files/11%2014%2015.pdf

ookawaiioo · Answer

I would say its dominate.

ookawaiioo · Answer

Ww or WW are affected with the widow peak; thus, it is dominant. 
ww (no capitalized) are no affected.

anonymous · Answer

Widows peak is not a Mendelian trait. See http://udel.edu/~mcdonald/mythintro.html As a Bio teacher, it really pisses me off that these traits are used in classes and continue to be put in Biology text books.