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The initial pool of a composite population is composed of:

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Important Questions on Sets, Relations and Functions

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The life span of human red corpuscles is
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Which one of the following statements regarding muscle contraction and relaxation is correct?
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Which one of the following is not a condensation polymer?
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_____ represents connecting link between amphibians and reptiles. 
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In pea, a pure tall plant (TT) is crossed with a short plant (tt). What will be the ratio of pure tall plants to short plants in the F2 generation ?
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Which one of the following statements is not correct with regard to genetically modified organisms?
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Which one of the following statements about blood elements is correct?
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A breeder crossed a pure breed tall plant having white flowers to a pure breed short plant having blue flowers. He obtained 202 F1 progeny and found that they are all tall having white flowers. Upon selfing these F1 plants, he obtained a progeny of 2160 plants. Approximately, how many of these are likely to be short and having blue flowers?
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Which one of the following statements about variations is not true?

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The subunits of DNA are known as
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Which one of the following gases was not present in the atmosphere of primitive earth ?
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A child receives a tall beautiful plant as a birthday gift from his father with a quiz, The father asked her how she would verify whether this tall plant was the progeny of both the tall parents or one tall and one short parent plant. She could verify this through
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Select the correct alternative from those given below each statement and write the completed statement:

In some animals like snails, sex determination is regulated by _____.

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Mutation in a virus is caused due to a change in its:
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The eukaryotic chromatin is composed of
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What is the law of dominance of traits? Explain with an example.
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In a breed of dog, long-haired phenotype is recessive to short-hair. In a litter, one pup is short- haired and its sibling is long-haired. Consider the following possible phenotypes of the parents.

i. Both parents are short-haired.

ii. Both parents are long-haired.

iii. One parent is short-haired, and one is long- haired.

Choose the CORRECT combination of the possible parental phenotypes.

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Which one of the following statements about proteins in mammalian cells is correct?
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In human beings, the chromosomes that determine birth of a normal female child are__________________.
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What combination of paternal chromosome results in a female?