Question

Phenotypic ratio in co-dominance
(a) 1 : 2 : 1 (b) 3 : 1
(c) 2 : 1 (d) 2 : 1 : 3

Answer 1

Answer:

b) 3:1,--------- where three plants are tall in first filial generation and one is recessive that is dwarf.

Answer 2

Phenotypic Ratio

Explanation:

    (a)Phenotypic ratio in co-dominance is  1 : 2 : 1.

• Codominance is a heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype.
• In codominance, neither phenotype is completely dominant. This phenomenon is commonly seen in ABO blood group system.
• When any other blood group (A, B or AB) is crossed with O blood group, then the phenotypic ratio is obtained as 1:1. Both the genes are equally expressed.