Show dihybrid cross between TTRR and ttrr. Find phenotypic ratio

Ratio in dihybrid cross -

Define dihybrid cross.

Dihybrid cross is related to

A dihybrid cross is made between Yyrr and yyRR. In F_(2) generation the ratio of parental to recombinant phenotype is

When two hybrids rrTt and Rrtt are crossed, the phenotypic ratio of offspring would be

What is a dihybrid ratio ?

Show with a cross how the phenotypical and genotypical ratio become same in F_2 generation of Mendel's monohybrid cross?

"F"_(2) generation in Mendelian cross showed that both genotypic and phenotypic ratios are same as 1 : 2 : 1 . It represents a case of: 1. Dihybrid cross 2. Monohybrid cross with complete dominance 3. Monohybrid cross with incomplete dominance 4. Co-dominance

In the F_(2) generation a Mendelian dihybrid cross the number of phenotypes and genotypes are

In dihybrid cross, the test cross ratio will be