Q. No.Consider the following statements:
I:
Self-pollination or selfing is the extreme form of inbreeding.
II:
Loss of vigor associated with inbreeding is inbreeding depression.
III:
Self-pollinated crops do not usually show the ill effects of inbreeding.
The correct statements are:
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
2. Only I and III
3. Only II and III
4. I, II and III
Interspecific hybridization and chromosome doubling have led to the creation of:
I. The modern wheat, Triticum aestivum
II. The first man-made cereal, Triticale
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Which of the following is important for successful MOET programs in cattle breeding?
| 1. | The age of the donor and the surrogate must be similar |
| 2. | There must be estrus synchronization between the donor and the surrogate |
| 3. | Both donor and surrogate undergo superovulation protocol |
| 4. | The bull and the cow must be of the same breed |
Consider the given two statements:
| I: | Inbreeding results in more recessive traits manifesting themselves in the progeny. |
| II: | Recessive traits can only occur in an offspring if present in both parents' genomes. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Consider the given two statements:
| I: | As a part of maintaining the germplasm collection, the stored seeds are grown periodically in the field to obtain fresh seeds. |
| II: | The germplasm collections are usually maintained at a low temperature in the form of seeds. |
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Most plant introductions in a country like India are:
| 1. | grown directly by the farm |
| 2. | ornamental plants introduced for their aesthetic values |
| 3. | used as parents in hybridization in breeding programs |
| 4. | invasive species that cause harm to the ecosystem |
The selection in cross-pollinated crops ultimately aims at:
| 1. | selecting the most desirable pureline. |
| 2. | increasing the frequency of superior genotypes without reducing heterozygosity. |
| 3. | removing all true breeding varieties from the germplasm and hybridizing only heterozygous varieties. |
| 4. | converting purelines into apomicts to prevent segregation of desired traits. |
Practically all hybrids of poultry and swine are produced by:
1. crossing inbred stocks
2. introduction of exotic breeds
3. crossing genetically similar parents
4. mutation breeding
Milk yield in cattle is primarily dependent on:
| 1. | Quality of breeds | 2. | Disease resistance |
| 3. | Good care of cattle | 4. | Hormonal treatments |
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