HSA 2007 Biology Item 46
- CID
- CID74ec59816fab646b0cb8e04a5cd7b288
- itemNum
- 46
- initialLetter
- F
- itemType
- SR
- itemAnswerKey
- 1
- itemMaxScorePoints
- 1
- origNum
- x
Use the information and Punnett square below to answer the following question.
In guinea pigs, the allele for black fur (B) is dominant. The allele for brown fur (b) is recessive. Two guinea pigs were crossed as shown in the Punnett square below. Numbers 1, 2, 3, and 4 represent the types of offspring produced from the cross.
Which of these describes the phenotypes of the parent guinea pigs?
- Both parents have black fur.
- Both parents have brown fur.
- One parent has black fur, and the other has brown fur.
- One parent has a mixture of black and brown fur, and the other has black fur.