Sonari variety of sheep mostly found in which of the following districts of Rajasthan?
The Sonari variety of sheep is one of the important indigenous sheep breeds found in India, particularly prominent in the state of Rajasthan. These sheep are well-known for their unique physical characteristics and their economic value, primarily for mutton and sometimes for wool production.
The Sonari variety of sheep is predominantly found in the southern and south-eastern parts of Rajasthan. The districts that form their major habitat are:
| Sheep Variety | Major Districts of Rajasthan | Key Characteristics/Purpose |
|---|---|---|
| Sonari | Udaipur, Dungarpur, Bhilwara | Long pendulous ears, good for mutton. |
| Marwari | Jodhpur, Pali, Nagaur, Jaisalmer | Black face, hardy, good for wool and meat. |
| Pugal | Bikaner, Jaisalmer, Nagaur | Compact body, good for wool. |
| Chokla (Magra) | Churu, Sikar, Nagaur, Bikaner | Finest carpet wool quality in India. |
Let's examine the given options based on the known distribution of Sonari sheep in Rajasthan:
Therefore, the districts of Udaipur, Dungarpur, and Bhilwara align perfectly with the known distribution range of the Sonari variety of sheep in Rajasthan.
Which of the following is an indigenous dairy breed of cattle?
Given below are a few statements on use of plant breeding to develop improved varieties of a crop plant:
A: Genotypic/phenotypic variation in the desired trait should be available in the germplasm resources of the crop plant.
B: Availability of molecular markers linked to the trait of interest would decelerate the process of trait introgression into desired varieties.
C: Breeding procedures to improve plant varieties are generally more successful among sexually compatible species as compared to sexually incompatible species.
D: Co-dominant molecular markers cannot be used for selection of plants with the desired trait.
Which of the above statement(s) is/are INCORRECT?
Given below are some terms in column A and their corresponding properties/related terms in column B
| Column X | Column X | ||
| A | Bulk segregant analysis | (i) | QTL analysis of wider genetic diversity using fewer individuals |
| B | NILS | (ii) | Mapping monogenic qualitative trails |
| C | Association mapping | (iii) | Co-dominant markers |
| D | SNPs | (iv) | Repeated backcrossing of F1 to recurrent parent |
Which one of the following approaches/markers would be typically used for discovering polymorphism between two closely related accessions of a crop plant?
A group of researchers are testing two new agents, M1 and M2 for their efficacy in selecting transgenic plants. When they performed tissue culture experiments using three explants, A, B, and C without Agrobacterium transformation, and selected the regenerated plants on M1 and M2, the following regeneration frequencies were obtained.
| Regeneration frequencies (%) in presence of different concentration of agents | ||||||
| Explant type | M1 conc. (mg/L) | M2 conc. (mg/L) | ||||
| 20 | 60 | 100 | 10 | 15 | 20 | |
| A | 44% | 21% | Nil | 8% | Nil | Nil |
| B | 53% | 30% | 10% | Nil | Nil | Nil |
| C | 71% | 42% | 18% | 15% | 9% | 4% |
Based on the above data, which one of the following conclusions is INCORRECT?