Answer:
The flower colour ratio obtained is: Blue : Purple = 3 : 1.
Explanation:
- According to the question,
- the genotype, AABB or AaBb or AABb or AaBB gives blue phenotype.
- the genotype, AAbb or aaBB or Aabb or aaBb gives purple phenotype.
- Red phenotype is for the aabb genotype.
- As only the presence of dominant allele is mentioned but whether it is homozygous or heterozygous is not mentioned, in 1. we consider that presence of a single dominant allele A or B in either locus is capable of showing a blue phenotype, irrespective of the nature of the other allele.
- In 2. we consider that the presence of a single dominant allele, A or B in one locus with recessive pairs of alleles in the other locus is sufficient to develop the purple phenotype.
- The aaBb individual will produce the gametes: aB, ab.
- The AABb individual will produce the gametes: AB, Ab.
- Crossing them,
aB ab
AB AaBB AaBb
(Blue) (Blue)
Ab AaBb Aabb
(Blue) (Purple)
- Of the offspring obtained, 3 have blue phenotype and 1 has purple phenotype.
- Hence, they have the following phenotypic ratio:
Blue : Purple = 3 : 1.
<span>The region of Poland has suffered from the few limits of European states with respect to the international politics of the 20th century. The variations of the borders of Poland is due to the absence of natural barriers in the east-west. The extension of the border is the cause of constant changes in stability that have shaken the country and the inhabitants.</span>
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