Allele b denotes blue eyes in humans and allele B for brown eyes is completely dominant over b.Alele b is partially dominant over bg (green eyes)and bh (hazel eyes).Allele bh is completely dominant over bg (green eyes)What is the dominance hierarchy for this trait?
A) Bbbgbh
B) Bbbhbg
C) bBbgbh
D) Bbgbhb
E) BgbhbB

Question

Allele b denotes blue eyes in humans and allele B for brown eyes is completely dominant over b.Alele b is partially dominant over bg (green eyes)and bh (hazel eyes).Allele bh is completely dominant over bg (green eyes)What is the dominance hierarchy for this trait?
A) B>b>bg>bh
B) B>b>bh>bg
C) b>B>bg>bh
D) B>bg>bh>b
E) Bg>bh>b>B

Quizplus · Accepted Answer

The dominance hierarchy for this trait is as follows: B > b > bh > bg.
B (brown eyes) is completely dominant over b (blue eyes), which means that if an individual has one copy of B and one copy of b, they will have brown eyes, as B will be expressed. 
b (blue eyes) is partially dominant over both bh (hazel eyes) and bg (green eyes), meaning that if an individual has one copy of B and one copy of b or two copies of b, they will have blue eyes; if an individual has one copy of b and one copy of bh or two copies of bh, they will have hazel eyes; if an individual has one copy of b and one copy of bg or two copies of bg, they will have green eyes. 
bh (hazel eyes) is completely dominant over bg (green eyes), meaning that if an individual has one copy of bh and one copy of bg, they will have hazel eyes, as bh will be expressed.

Allele B Denotes Blue Eyes in Humans and Allele B