Dihybrid cross pure red long Pollen pea plant is crossed with white sh...
Calculation of White Long Pollen Pea Plants in Dihybrid Cross
Understanding the Cross:
- In a dihybrid cross, two genes are considered simultaneously.
- The parental cross involves a pure red long pollen pea plant and a white short pollen pea plant.
- The linkage between the two genes is 60%, indicating that they are not assorting independently.
Calculating the Progeny:
- Since the linkage between the genes is 60%, the genes are on the same chromosome and tend to be inherited together.
- The gametes produced will be more likely to contain the combinations of red long and white short alleles or red short and white long alleles.
- The white long pollen pea plant is the result of the red short and white long allele combination.
Total Progeny:
- Out of 2000 progeny, the 60% linkage between genes suggests that 60% of the progeny will exhibit the linked traits.
- Therefore, 60% of 2000 is 1200 progeny with linked traits.
- Since the white long pollen pea plant is one of the linked trait combinations, the number of white long pollen pea plants will be a fraction of the 1200 progeny.
Calculation:
- To determine the number of white long pollen pea plants, the percentage of the white long trait in the linked progeny needs to be calculated.
- If, for example, the white long trait is 25% of the linked progeny, then there would be 25% of 1200, which equals 300 white long pollen pea plants in the total progeny of 2000.
Dihybrid cross pure red long Pollen pea plant is crossed with white sh...
I think it's ans. should be 150.
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