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.
Suspension cultures grow much faster than callus culture provided they are:
1. fed with nutrients continuously
2. not exposed to sunlight
3. constantly agitated
4. deprived of oxygen
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 |
Protoplast fusion during somatic hybridization is achieved by the use of:
1. Phenoxy acetic acid
2. Colchicine
3. Polyethylene glycol
4. 2,4 – D
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. |
Consider the given two statements:
I: | Embryo culture finds useful application in some interspecific crosses. |
II: | It includes the excision of young embryos from developing seeds and their cultivation on a nutrient medium. |
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.
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