Q16 of 53 Page 29

Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation?

genotype of the offspring of next generation is AaBb:Aabb:aaBb:aabb which means the ratio is 1:1:1:1.



According to the dihybrid cross between heterozygous gene AaBb and homozygous gene aabb; the ratio is 1:1 in terms of phenotype. (It is 4:4:4:4 that is 1:1:1:1 for the genotype).

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