| List I | List II | ||
|---|---|---|---|
| A | Two or more alternative forms of a gene | I | Back cross |
| B | Cross of F1 progeny with homozygous recessive parent | II | Ploidy |
| C | Cross of F progeny with any of the parents | III | Allele |
| D | Number of chromosome sets in plant | IV | Test cross |
To solve this problem, we need to correctly match terms from List I to their definitions in List II. Let's break down each term and match them accordingly:
| List I | Definition | List II |
|---|---|---|
| A | Two or more alternative forms of a gene | III |
| B | Cross of F1 progeny with homozygous recessive parent | IV |
| C | Cross of F progeny with any of the parents | I |
| D | Number of chromosome sets in plant | II |
Therefore, the correct matching is: A-III, B-IV, C-I, D-II
Three identical heat conducting rods are connected in series as shown in the figure. The rods on the sides have thermal conductivity 2K while that in the middle has thermal conductivity K. The left end of the combination is maintained at temperature 3T and the right end at T. The rods are thermally insulated from outside. In steady state, temperature at the left junction is \(T_1\) and that at the right junction is \(T_2\). The ratio \(T_1 / T_2\) is 
