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Tay-Sachs disease runs in Seema’s family. On a family pedigree, she saw a half darkened circle. This represented

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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 about blood elements is correct?
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Which one of the following is not a condensation polymer?
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Which of the following tests cannot be used for identifying amino acids?
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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 regarding muscle contraction and relaxation is correct?
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Which of the following is not a bleaching agent?

1. Sodium hypochlorite
2. Calcium hypochlorite
3. Hydrogen peroxide
4. Hydrogen sulphide

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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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The medicine paracetamol is _____.
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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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The instrument used to regulate temperature to a particular degree is called:

1. Thermostat

2. Thermometer

3. Pyrometer

4. Thermocouple

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Mutation in a virus is caused due to a change in its:
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Human nails are made up of:

1. Pigment
2. Elastin
3. Albumin
4. Keratin

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Pressure is measured terms of:

1. Mass and Density

2. Work Done

3. Force and Area

4. Force and Distance

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 Which of the following metal is used in storage battery?
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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?