This is a case of incomplete dominance, In a cross between heterozygotes b1b2 the ratio will be 1:2:1.
- When both alleles of a gene are only partially expressed at a locus, it is known as incomplete dominance.
- This sort of gene interaction frequently produces an intermediate or distinct phenotype. Additionally called partial dominance.
- Pink blossoms of the four o'clock flower (Mirabilis Jalapa) and physical traits in people, such as hair color, hand sizes, and height, are instances of incomplete dominance.
- When the two alleles combine to create a third phenotype that differs from both of the parents, this is known as incomplete dominance.
- The standard illustration is when a red flower and a white flower are combined.
the cross for two individuals with genotype b1b2 is as follows:
b1b2 X b1b2 (parent)
b1b1, b1b2, b1b2, b2b2 (offspring)
thus the ratio will be 1:2:1 (blue: light blue: white)
learn more about incomplete dominance here: https://brainly.com/question/14080068
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