Respuesta :
Answer: It focuses on one trait at a time
Explanation:
The flower ratio has a 1:2:1, this is implying that an incomplete dominance with PP = Purple , PW=Pink and WW= white.
The pod length has a ratio of 3:1 and this is implying that L or long allele is dominant over l or the short allele
The result will be
Flower color= incomplete dominance; Height= complete dominance
In the given case, these traits being inherited are - the length of the pods is inherited by autosomal dominant mode and the color of the flower is inherited with incomplete dominance.
The dihybrid phenotypic ratio for two genes deconstructs into separate constituent monohybrid ratios for each of the two traits, such as the flower color and pod length, it focuses on one trait at a time.
Let us consider the length of the pod first.
- The long pod flowers and short pod flowered are crossed, both phenotypes are present in the F2 generation.
- The majority of the F2 are long pod flowers.
- This is the autosomal mode of inheritance.
Let us consider the color of the flower:
- The first cross is between the plants with purple and white flowers and we can observe
- pink, purple and white-flowered plants in the F2 generation.
- This represents the incomplete dominance of alleles.
Here is the cross;
Parents: Long pod, white flower x short pod purple flower
AApp x aaPP
Gametes: Ap x aP
F1: AaPp
- All the F1 individuals are long pod purple flowers with a genotype AaBb
Thus, In the given case, these traits being inherited are - the length of the pods is inherited by autosomal dominant mode and the color of the flower is inherited with incomplete dominance.
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