Understanding the Genetics
* Black Fur: Let's represent the dominant black fur allele with the letter "B".
* Other Fur Color: Let's assume the recessive allele for a different fur color (like white) is represented by the letter "b".
* Heterozygous: This means the guinea pig has one dominant allele (B) and one recessive allele (b).
Genotype of the Guinea Pigs
Since both guinea pigs are heterozygous black, their genotype is Bb.
Punnett Square
To determine the possible genotypes of their offspring, we use a Punnett square:
```
B b
B BB Bb
b Bb bb
```
Possible Offspring Genotypes:
* BB: Black (homozygous dominant)
* Bb: Black (heterozygous)
* bb: Non-black (homozygous recessive)
Conclusion
Two black heterozygous guinea pigs (Bb x Bb) can produce offspring with the following genotypes: BB, Bb, and bb.
