| 1. | In order to ensure that he had pure-breeding plants for his experiments, mendel ? | |
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Removed the male parts of the plants
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Removed the female parts of the plants
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Let each variety self fertilise for several generations
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Cross-fertilised each variety with each other
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Report Question| 2. | The year 1990 AD is highly significant for genetics due to ? | |
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Rediscovery of Mendelism
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Discovery of genes
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Chromosome theory of heredity
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Principle of linkage
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| 3. | If a heterozygous tall plant is crossed with a homozygous dwarf plant, the proportion of dwarf progeny will ? | |
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25%
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100%
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50%
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75%
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| 4. | An organism with two identical alleles of a gene in a cell is called ? | |
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Hybrid
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Homozygous
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Heterozygous
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Domainant
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| 5. | Which of the following is an example of genetic variation ? | |
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One person is older than another.
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Two children have different eye colours.
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Reeta eats meat, but her sister Geeta is a vegetarian.
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One person has a scar, but his friend does not.
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| 6. | The human species has genetic roots in ? | |
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Indonesia
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America
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Australia
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Africa
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| 7. | Differences between organisms in a species are described as variation. Which of the following would you describe as continuous variation ? | |
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Weight
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Eye colour
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Sex
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Hair colour
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| 8. | Select the group which shares maximum number of common characters ? | |
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Two genera of two families
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Two genera of a family
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Two individuals of a species
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Two species of a genus
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| 9. | The theory of Natural Selection was proposed by ? | |
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Haldane
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Mendel
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Darwin
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Lamarck
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| 10. | If in human a sperm (22+Y) fertilizes an egg (22+X), the sex of the foetus shall be ? | |
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Female
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None of the answers
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Either male or Female
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Male
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