Q. No.A heterozygous plant produces:
1.
Only one kind of gamete
2.
Two kinds of gametes, each having one allele with equal proportion.
3.
Two kinds of gametes, each having two alleles with equal proportions.
4.
Two kinds of gametes, each having one allele, with one allele occurring in more
gametes than the other.
gametes than the other.
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A 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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When Mendel self-hybridized F1 progeny of a dihybrid cross between pure Yellow Round seeded plants and Green Wrinkled plants, he observed that yellow and green colour segregated in a ratio of:
| 1. | 1 : 1 | 2. | 3 : 1 |
| 3. | 9 : 3 : 3 : 1 | 4. | 1 : 2 : 1 |
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Identify the incorrect statement regarding experiments on Pisum sativum by Gregor Mendel:
| 1. | He conducted hybridisation experiments on garden peas for seven years (1856-1863) and proposed the laws of inheritance in living organisms. |
| 2. | It was for the first time that statistical analysis and mathematical logic were applied to problems in biology. |
| 3. | Unfortunately his experiments had a small sampling size, which gave less credibility to the data that he collected. |
| 4. | He investigated characters in the garden pea plant that were manifested as two opposing traits. |
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‘When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pair of characters’. This is the statement of:
1. Law of Dominance
2. Law of segregation
3. Law of Independent Assortment
4. Law of Linkage
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Mendelian disorders are mainly determined by:
| 1. | Alteration or mutation in a single gene. |
| 2. | Chromosomal gross structural changes. |
| 3. | Recombination between linked genes. |
| 4. | Jumping genes |
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The branch of biology that deals with inheritance, as well as the variation of characters from parents to offspring, is called as:
| 1. | Evolution | 2. | Genetics |
| 3. | Developmental biology | 4. | Forensics |
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In 1900, Mendel’s work was rediscovered by:
| 1. | Khorana, Nirenberg and Mathei |
| 2. | de Vries, Correns and von Tschermak |
| 3. | Avery, McCleod and McCarty |
| 4. | Watson, Crick and Wilkins |
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The ultimate source of allelic variation is:
| 1. | Recombination | 2. | Natural selection |
| 3. | Mutation | 4. | Drift |
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Which of the following was not a character studied by Mendel in garden pea?
| 1. | Flower position | 2. | Pod shape |
| 3. | Flower colour | 4. | Pod position |
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