Two genes 'A' and 'B' are linked. In a ...

Two genes 'A' and 'B' are linked. In a dihybrid cross moveing these two genes, the F 1 het- erozygote ,s crossed with homozygous re- cessive parental type (aa b(b). What would be the ratio of offspring in the next generation?

`1:1:1:1`

`9:3:3:1`

`3:1`

`1:1`

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