Question
In some cats, the gene for tail length shows incomplete dominance. When a cat with a long tail is bred to a cat with no tail, the resulting offspring have short tails. Cross a long tail cat with a short tail cat.
What is the probability of long tail offspring? %
What is the probability of short tail offspring? %
What is the probability of no tail offspring? %
What is the probability of long tail offspring? %
What is the probability of short tail offspring? %
What is the probability of no tail offspring? %
Answers
GPT-4o mini
To analyze the inheritance of tail length in cats exhibiting incomplete dominance, let's first establish the genotypes of the parent cats involved in the cross.
1. Let's denote the following:
- **L**: allele for long tail (homozygous dominant, LL)
- **S**: allele for short tail (heterozygous, LS)
- **N**: allele for no tail (homozygous recessive, SS)
In your scenario:
- One parent has a long tail (genotype LL).
- The other parent has a short tail (genotype SS).
Since the incomplete dominance results in the following offspring:
- A cat with genotype LL (long tail) crossed with a cat with genotype SS (no tail) will produce offspring with the genotype LS (short tail).
Since the offspring from this cross would all have the genotype LS, they all would exhibit the short tail phenotype based on the incomplete dominance nature of this genetic trait.
### Probabilities:
1. **Probability of long tail offspring**:
- Since neither parent contributes the long tail allele phenotype in any offspring when crossed with the no tail parent, the **probability of long tail offspring is 0%**.
2. **Probability of short tail offspring**:
- All resulting offspring will have the LS genotype and exhibit the short tail phenotype. Thus, the **probability of short tail offspring is 100%**.
3. **Probability of no tail offspring**:
- There are no offspring produced with the genotype that results in no tail when a long tail cat is crossed with a no tail cat. Therefore, the **probability of no tail offspring is 0%**.
In summary:
- Probability of long tail offspring: **0%**
- Probability of short tail offspring: **100%**
- Probability of no tail offspring: **0%**
1. Let's denote the following:
- **L**: allele for long tail (homozygous dominant, LL)
- **S**: allele for short tail (heterozygous, LS)
- **N**: allele for no tail (homozygous recessive, SS)
In your scenario:
- One parent has a long tail (genotype LL).
- The other parent has a short tail (genotype SS).
Since the incomplete dominance results in the following offspring:
- A cat with genotype LL (long tail) crossed with a cat with genotype SS (no tail) will produce offspring with the genotype LS (short tail).
Since the offspring from this cross would all have the genotype LS, they all would exhibit the short tail phenotype based on the incomplete dominance nature of this genetic trait.
### Probabilities:
1. **Probability of long tail offspring**:
- Since neither parent contributes the long tail allele phenotype in any offspring when crossed with the no tail parent, the **probability of long tail offspring is 0%**.
2. **Probability of short tail offspring**:
- All resulting offspring will have the LS genotype and exhibit the short tail phenotype. Thus, the **probability of short tail offspring is 100%**.
3. **Probability of no tail offspring**:
- There are no offspring produced with the genotype that results in no tail when a long tail cat is crossed with a no tail cat. Therefore, the **probability of no tail offspring is 0%**.
In summary:
- Probability of long tail offspring: **0%**
- Probability of short tail offspring: **100%**
- Probability of no tail offspring: **0%**