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Q. No.The famous double helix model of DNA was proposed by Watson and Crick in ____ and they shared Nobel Prize for Physiology or Medicine in ________ for their effort.
| 1. | 1951, 1971 | 2. | 1943, 1963 |
| 3. | 1953, 1962 | 4. | 1969, 1972 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA plant, on repeated self-pollination, preserves the trait expressed for many generations. Such a plant is said to be:
| 1. | Panmictic | 2. | Homologous |
| 3. | Apomictic | 4. | Pure line |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is a recessive trait for a character chosen by Mendel in garden pea?
| 1. | Violet flower colour | 2. | Yellow pod colour |
| 3. | Axial flower position | 4. | Tall stem height |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe F1 progeny in monohybrid crosses by Mendel resembled:
| 1. | The parent exhibiting the dominant trait completely |
| 2. | The parent exhibiting recessive trait comp |
| 3. | The parent exhibiting the dominant trait partly |
| 4. | The parent exhibiting recessive traits partly |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyGenes that code for a pair of contrasting traits or slightly different forms of the same gene are known as:
| 1. | Alleles | 2. | Loci |
| 3. | Cistrons | 4. | Introns |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn true breeding, the allelic pair of genes are:
| 1. | Homologous | 2. | Linked |
| 3. | Stable | 4. | Homozygous |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross is called as:
| 1. | Forked line diagram | 2. | Punnett square |
| 3. | Pedigree chart | 4. | Idiogram |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA test cross is done to find out:
| 1. | Fitness of an organism |
| 2. | Genotype of a plant expressing dominant phenotype |
| 3. | The suitable parents for a Mendelian Cross |
| 4. | The hidden genotypic ratio of F2 phenotypes |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the ratio of a typical monohybrid test cross?
| 1. | 2 : 1 | 2. | 3 : 1 |
| 3. | 1: 2 : 1 | 4. | 1 : 1 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe expression of only one of the parental characters in a monohybrid cross in the F1, the expression of both in the F2 and the proportion of 3:1 obtained at the F2 can be explained by:
1. Law of Dominance
2. Law of segregation
3. Law of Independent Assortment
4. Two-factor interaction
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