Chapter 8 : Heredity and Evolution
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Which of the following is a source of evolutionary evidence?
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Homologous organs have
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Analogous organs have
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Which chromosome in males determines maleness?
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In Mendel’s experiment, dwarfness in pea plant is represented by
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Which evidence supports evolution most strongly?
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Evolution mainly results in
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Identical twins have
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Which of the following causes variation?
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DNA stands for
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The structure of DNA was discovered by
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Evolution cannot be proved directly because
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Which of the following shows inherited variation?
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Which process leads to formation of gametes?
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Fossils are usually found in
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Which scientist gave the inheritance of acquired characters theory?
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Evolution occurs due to
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Which organelle contains chromosomes?
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Which of the following is a recessive trait in pea plants?
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The F1 generation obtained by crossing pure tall and pure dwarf plants are
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Mendel’s law of segregation states that
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The physical appearance of an organism is called
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The genetic constitution of an organism is called
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Which factor decides the sex of a child in humans?
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Human appendix is an example of
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Wings of birds and insects are examples of
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Homologous organs provide evidence for
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The process by which new species arise is called
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Fossils provide evidence for
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Which blood group is called universal donor?
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A sudden change in genes is called
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The exchange of genetic material takes place during
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Which trait can be inherited?
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Which of the following is an acquired trait?
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The study of heredity and variations is called
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Variations are important for
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“Survival of the fittest” is related to
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Which scientist proposed the theory of evolution by natural selection?
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The number of chromosomes in human beings is
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Human females have sex chromosomes
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Human males have sex chromosomes
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The chromosome pair that determines sex in humans is
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Which of the following represents a hybrid trait?
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Which pair of alleles represents a pure tall plant?
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The trait which remains hidden in F1 generation is called
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A trait that appears in the first generation is called
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Mendel is known as the father of
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Gregor Mendel conducted experiments on
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The basic unit of heredity is
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The transmission of traits from parents to offspring is called
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