what is the phenotype of a mouse that has the genotype Bb where B is the gene for black fur and b is the gene for brown fur assuming this gene follows a Mendelian inheritance pattern?
Assuming that the gene for fur color follows a simple Mendelian inheritance pattern, where the dominant allele (B) produces black fur and the recessive allele (b) produces brown fur, the phenotype of a mouse with the genotype Bb would be black fur.
In Mendelian inheritance, if an individual has at least one dominant allele (B), it will display the trait associated with that allele (black fur). For the brown fur phenotype to be expressed, an individual must have two copies of the recessive allele (bb). Since the mouse in question has one dominant allele (B) and one recessive allele (b), the dominant black fur phenotype will be observed.
To determine the phenotype of a mouse with the genotype Bb, where B represents black fur and b represents brown fur, assuming Mendelian inheritance:
1. Understand the Mendelian inheritance pattern: In Mendelian inheritance, a dominant allele (represented by a capital letter) masks the effect of a recessive allele (represented by a lowercase letter).
2. Determine the genotype: The genotype Bb indicates that the mouse has one copy of the dominant allele (B) and one copy of the recessive allele (b) for fur color.
3. Analyze the phenotype: In this case, black fur (B) is the dominant trait, while brown fur (b) is the recessive trait. Since the mouse has both a dominant and a recessive allele, its phenotype will exhibit the dominant trait. Therefore, the phenotype of a mouse with the genotype Bb would be black fur.
In summary, a mouse with the genotype Bb, assuming Mendelian inheritance, would have the phenotype of black fur.
To determine the phenotype of a mouse with the genotype Bb, we need to understand how the gene for fur color is inherited. In Mendelian inheritance, dominant alleles (represented by uppercase letters) mask the effects of recessive alleles (represented by lowercase letters).
In this case, B represents the gene for black fur (dominant), and b represents the gene for brown fur (recessive). So, if a mouse has the genotype Bb, it means it has one copy of the dominant allele for black fur (B) and one copy of the recessive allele for brown fur (b).
According to Mendelian inheritance, if an organism has one dominant allele (B) and one recessive allele (b), the dominant allele will determine the phenotype. In other words, the presence of the dominant allele B will result in black fur. Therefore, the phenotype of a mouse with the genotype Bb is black fur.
To summarize, if the gene for fur color in mice follows Mendelian inheritance and a mouse has the genotype Bb, its phenotype would be black fur.