The question is as follows: The round trait is dominant over recessive wrinkled peas. A homozygous round pea mates with a homozygous wrinkled pea. The resulting F1 generation is self crossed and 900 round pea plants and 100 wrinkled plants are observed. What is the penetrance of the Wrinkled genotype?
I already figured out that there is a 25% chance of getting wrinkled pea plants using the regular Mendelian punnet squares but I don't know what to do with the numbers of 100 and 900 given.
thank you!
brooo I need the answers for this test
To determine the penetrance of the wrinkled genotype, we need to understand the observed ratio of round to wrinkled pea plants in the F1 generation.
In this case, we have 900 round pea plants and 100 wrinkled pea plants observed in the F1 generation.
To calculate the penetrance of the wrinkled genotype, we need to divide the number of observed wrinkled pea plants by the total number of observed plants (round + wrinkled).
Penetrance = Number of Wrinkled Plants / (Number of Round Plants + Number of Wrinkled Plants)
Plugging in the numbers we have, we get:
Penetrance = 100 / (900 + 100)
Penetrance = 100 / 1000
Penetrance = 0.1 or 10%
So, the penetrance of the wrinkled genotype is 10%.
To calculate the penetrance of the wrinkled genotype, you need to determine the percentage of individuals with the genotype that display the associated trait. In this case, the wrinkled genotype is represented by the recessive allele.
In the F1 generation, you observed 100 wrinkled pea plants out of a total of 900 plants. This means that 900 - 100 = 800 plants have the round trait. Since the round trait is dominant, all the plants with the round genotype would display the round phenotype.
To calculate the penetrance of the wrinkled genotype, you need to find the percentage of plants with the wrinkled genotype that display the wrinkled phenotype. This can be calculated using the following formula:
Penetrance = (Number of wrinkled plants / Total number of plants with the wrinkled genotype) x 100
So, in this case, the penetrance of the wrinkled genotype would be:
Penetrance = (100 / (100 + 800)) x 100
Penetrance = (100 / 900) x 100
Penetrance ≈ 11.11%
Therefore, the penetrance of the wrinkled genotype is approximately 11.11%. This means that out of all the plants with the wrinkled genotype, only around 11.11% actually display the wrinkled phenotype.