Q. No.Which 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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Identify the incorrect statement:
| 1. | Tall plant produces gametes by meiosis and the dwarf plant by mitosis. |
| 2. | Only one allele is transmitted to a gamete. |
| 3. | This segregation of alleles is a random process. |
| 4. | Gametes will always be pure for the trait. |
Blood group antigens are:
| 1. | Carbohydrates present in plasma |
| 2. | Carbohydrates present on the surface of RBCs |
| 3. | Plasma proteins |
| 4. | Proteins present on the surface of RBCs |
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To study whether a gene exhibits multiple allelism or not, one must study:
| 1. | An individual | 2. | A population |
| 3. | A species | 4. | With concentration! |
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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. |
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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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