If a breeder wanted to discover whether a black guinea pig was homozygous (BB) or heterozy- gous (Bb) for coat color, the animal in question would have to be crossed with an individual that has the genotype (1) BB (2) bb (3) Bb (4) BbBb
Question
If a breeder wanted to discover whether a black guinea pig was homozygous (BB) or heterozy- gous (Bb) for coat color, the animal in question would have to be crossed with an individual that has the genotype (1) BB (2) bb (3) Bb (4) BbBb
Solution
To determine whether the black guinea pig is homozygous (BB) or heterozygous (Bb) for coat color, it needs to be crossed with another individual.
To start, we need to understand the concept of alleles. In this case, the black coat color is determined by the B allele, while the absence of black color is determined by the b allele.
To determine if the black guinea pig is homozygous or heterozygous, we need to perform a test cross. A test cross involves crossing the individual in question with a known genotype.
In this scenario, we have four options for the genotype of the individual to be crossed with:
- BB
- bb
- Bb
- BbBb
To determine if the black guinea pig is homozygous (BB) or heterozygous (Bb), we need to observe the offspring of the cross.
If the black guinea pig is homozygous (BB), all the offspring from the cross will have the black coat color, regardless of the genotype of the other individual.
If the black guinea pig is heterozygous (Bb), approximately half of the offspring will have the black coat color, while the other half will not, depending on the genotype of the other individual.
By observing the coat color of the offspring, we can determine whether the black guinea pig is homozygous (BB) or heterozygous (Bb) for coat color.
Similar Questions
The offspring of a mating between two het- erozygous black guinea pigs would probably show a genotype ratio of (1) 1 BB: 2 Bb: 1 bb (2) 3 Bb: 1 bb (3) 2 BB : 2 bb (4) 2 BB: 1 Bb: 1 bb
In guinea pigs, black coat color is dominant over white coat color. The offspring of a mat- ing between two heterozygous black guinea pigs would probably show a phenotype ratio of (1) two black to two white (2) one black to three white (3) three black to one white (4) four black to zero white
In a cross between a black guinea pig and a brown guinea pig, all of the offspring are black and none of the offspring are brown. Which of the following is most likely true?ABlack fur color is dominant in guinea pigs.BBrown fur color is dominant in guinea pigs.CNeither fur color is dominant nor recessive in guinea pigs.DBlack fur color is recessive in guinea pigs.
This is a Punnett square. In guinea pigs, black hair color is dominant (B) and white hair color is recessive (b). What hair color are the guinea pigs’ offspring? B bB BB BbBb bbb A. 100% black B. 75% black and 25% white C. 50% black and 50% white D. 75% white and 25% black
Consider a dihybrid cross between a black-eyed brown coloured fur guineapig with a red-eyed white coloured fur guineapig producing a black-eyed brown coloured fur guineapig. What should be the genetic constituent with which the offspring should be mated to perform a back cross? BbBrbr BBbrbr BbBrBr BBBrBr
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.