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Home Q & A Board Science-Related Homework Help High School Level Science
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RADIOhead RADIOhead
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13 years ago
in mice with complete dominance in coat colour, brown (B) is dominant to white (b). the genotypes BB, Bb, and bb represent
a. 2 phenotypes
b. 1 phenotype
c. 3 phenotypes
d. 2 genotypes
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wrote...
#1
Donated
Valued Member
13 years ago
2 phenotypes
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#2
On Hiatus
12 years ago Edited: 12 years ago, Bio_World100
So, Brown (B) is dominant to White (b).  That would mean there are 2 genotypes for Brown (Bb and BB).  These two genotypes result in a brown coat colour (1 phenotype).  There is only one genotype for the white coat colour because it is recessive: bb.  This genotype results in a white coat colour (1 phenotype).  

So, there are basically two phenotypes in total (brown and white).

So, the best choice that answers your question is A

Hope that helps!   Slight Smile
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