A selectable marker is used to:
1. | help in eliminating the non-transformants so that the transformants can be regenerated. |
2. | identify the gene for the desired trait in an alien organism. |
3. | select a suitable vector for transformation in a specific crop. |
4. | mark a gene on a chromosome for isolation using a restriction enzyme. |
A gene whose expression helps to identify transformed cell is known as:
1. | Vector | 2. | Plasmid |
3. | Structural gene | 4. | Selectable marker |
In genetic engineering, the antibiotic-resistance gene is used:
1. To select healthy vectors
2. As sequences from where replication starts
3. To keep the cultures free of infection
4. As selectable markers