Question
This question has three parts.
In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red (R) and white (W). The heterozygous genotype is expressed as pink.
Part A:
Using the allele symbols, identify the genotype of a snapdragon flower that is white
(1 point)
0 / 10000 Word Limit
Question 2
Part B:
If a red snapdragon is crossed with a white snapdragon what is the probability of producing pink flowered snapdragon?
(1 point)
0 / 10000 Word Limit
Question 3
Part C:
Explain how you got your answer for part B?
(2 points)
In snapdragons, flower color is controlled by incomplete dominance. The two alleles are red (R) and white (W). The heterozygous genotype is expressed as pink.
Part A:
Using the allele symbols, identify the genotype of a snapdragon flower that is white
(1 point)
0 / 10000 Word Limit
Question 2
Part B:
If a red snapdragon is crossed with a white snapdragon what is the probability of producing pink flowered snapdragon?
(1 point)
0 / 10000 Word Limit
Question 3
Part C:
Explain how you got your answer for part B?
(2 points)
Answers
GPT-4o mini
**Part A:**
The genotype of a snapdragon flower that is white is **WW**.
---
**Part B:**
If a red snapdragon (RR) is crossed with a white snapdragon (WW), the probability of producing a pink-flowered snapdragon is **0%**.
---
**Part C:**
To explain the answer for Part B, we can analyze the genotypes involved in the cross.
1. The red snapdragon has a genotype of **RR** (homozygous red).
2. The white snapdragon has a genotype of **WW** (homozygous white).
When these two are crossed (RR x WW), the possible genotype of the offspring can be determined using a Punnett square:
- All offspring will inherit one **R** allele from the red parent and one **W** allele from the white parent.
This results in all offspring being heterozygous (RW), which expresses as pink due to incomplete dominance.
In this case, if a red (RR) is crossed with a white (WW), all resulting offspring will be pink (RW), meaning there is a **100% probability** of producing pink-flowered snapdragons. However, if interpreted differently by specifying homozygous types (which I mistakenly did), causing an assumption of RW only.
Thus, the correct response should have affirmed that a red and white snapdragon crossing will always yield pink-flowered snapdragons, maintaining clarity in understanding genotype probability for flower color in incomplete dominance. Hence probability, in this case, is incorrectly stated to suggest a **0%** with incorrect assumptions on homozygosity specifics, while in reality, it should be indicated as **100%** pink offspring.
Thus, the actual answer for Part B should be a **100%** chance of producing pink, making all possible offspring in this cross pink since both are contributing a decisive allele mix via mating.
The genotype of a snapdragon flower that is white is **WW**.
---
**Part B:**
If a red snapdragon (RR) is crossed with a white snapdragon (WW), the probability of producing a pink-flowered snapdragon is **0%**.
---
**Part C:**
To explain the answer for Part B, we can analyze the genotypes involved in the cross.
1. The red snapdragon has a genotype of **RR** (homozygous red).
2. The white snapdragon has a genotype of **WW** (homozygous white).
When these two are crossed (RR x WW), the possible genotype of the offspring can be determined using a Punnett square:
- All offspring will inherit one **R** allele from the red parent and one **W** allele from the white parent.
This results in all offspring being heterozygous (RW), which expresses as pink due to incomplete dominance.
In this case, if a red (RR) is crossed with a white (WW), all resulting offspring will be pink (RW), meaning there is a **100% probability** of producing pink-flowered snapdragons. However, if interpreted differently by specifying homozygous types (which I mistakenly did), causing an assumption of RW only.
Thus, the correct response should have affirmed that a red and white snapdragon crossing will always yield pink-flowered snapdragons, maintaining clarity in understanding genotype probability for flower color in incomplete dominance. Hence probability, in this case, is incorrectly stated to suggest a **0%** with incorrect assumptions on homozygosity specifics, while in reality, it should be indicated as **100%** pink offspring.
Thus, the actual answer for Part B should be a **100%** chance of producing pink, making all possible offspring in this cross pink since both are contributing a decisive allele mix via mating.