Q. No.In Mendel’s experiments, the contrasting traits did not show any blending in:
1.
F1 stage
2.
F2 stage
3.
Both F1 and F2 stages
4.
The statement is false as blending was seen at all stages
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What could be the genotype of a garden pea plant that expresses the tall trait of height?
| 1. | TD | 2. | Tt |
| 3. | Td | 4. | tt |
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The law of segregation is based on the fact that :
1. The alleles do not show any blending.
2. There is random fertilization
3. Gametes are pure for the trait
4. The zygotes are diploid
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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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