Choose the correct pair of (Crop - Variety).

In India,the high-yielding varieties of $Jaya$ and $Ratna$ belong to which of the following?

Which crop variety was developed by Norman Borlaug?

What is the $Norin-10$ gene?

Arrange the following steps in the correct sequence for breeding a genetically diverse crop variety:
$I -$ Cross-hybridization among the selected parents
$II -$ Testing, release, and commercialization of new cultivars
$III -$ Selection and testing of superior recombinants
$IV -$ Collection of variability
$V -$ Evaluation and selection of parents

Four inbred lines of maize are crossed. This type of cross is known as: