1. A
   Statement (iii) is correct.
2. B
   Statement (ii) is correct.
3. C
   Statement (i) is correct.
4. D
   Statement (iv) is correct.

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1. A
   Covalent bond
2. B
   Ionic bond
3. C
   Hydrogen bond
4. D
   Phosphate band

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1. A
   Genome
2. B
   Trait
3. C
   Genotype
4. D
   Phenotype

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1. A
   1 : 1
2. B
   1 : 3
3. C
   2 : 1
4. D
   3 : 1

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1. A
   A gene is not the information source for making proteins in the cell.
2. B
   In individuals of a given species, a specific gene is located on a particular chromosome.
3. C
   All the inherited traits in human beings are not controlled by genes.
4. D
   Each chromosome has only one gene located all along its length.

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1. A
   any chromosome
2. B
   two different chromosomes
3. C
   sex chromosomes
4. D
   copies of the same chromosome

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1. A
   the Y chromosome in zygote
2. B
   the cytoplasm of germ cell which determines the sex
3. C
   the X chromosome in zygote
4. D
   sex is determined by chance

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1. A
   1 - C, 2 - B, 3 - D, 4 - A
2. B
   1 - A, 2 - C, 3 - B, 4 - D
3. C
   1 - B, 2 - D, 3 - A, 4 - C
4. D
   1 - D, 2 - A, 3 - C, 4 - B

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1. A
   1 - B, 2 - B, 3 - A, 4 - C
2. B
   1 - A, 2 - C, 3 - B, 4 - D
3. C
   1 - C, 2 - B, 3 - A, 4 - C
4. D
   1 - C, 2 - B, 3 - D, 4 - A

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1. A
   (ii) and (iii)
2. B
   (ii) and (iv)
3. C
   (i), (iii) and (iv)
4. D
   (iii) and (iv)

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1. A
   Dominant trait, Dominant trait
2. B
   Dominant trait, Inherited trait
3. C
   Recessive trait, Inherited trait
4. D
   Dominant trait, Recessive trait

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1. A
   For every molecule of fat there is a gene
2. B
   For production of every enzyme there is a gene
3. C
   For every protein there is a gene
4. D
   For every hormone there is a gene

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1. A
   A and C
2. B
   B and D
3. C
   A, B and C
4. D
   A, B and D

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1. A
   (A)
2. B
   (B)
3. C
   (C)
4. D
   (D)

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1. A
   (ii) and (iv)
2. B
   (i) and (ii)
3. C
   (ii) and (iii)
4. D
   (i) and (iii)

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1. A
   TtWW
2. B
   TTWW
3. C
   TTww
4. D
   TtWw

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1. A
   (i) and (iv)
2. B
   (i) and (iii)
3. C
   (ii) and (iii)
4. D
   (i) and (ii)

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1. A
   only variations with parents
2. B
   both similarities and variations with parents
3. C
   neither similarities nor variations
4. D
   only similarities with parents

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1. A
   Yeast
2. B
   Plasmodium
3. C
   Leishmania
4. D
   Paramoecium

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1. A
   (ii) and (iv)
2. B
   (i) and (iii)
3. C
   (ii) and (iii)
4. D
   (i) and (ii)

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1. A
   Inter - Uterine Contraceptive Device
2. B
   Intra - Uterine Contraceptive Diet
3. C
   Intra - Uterine Cover Device
4. D
   Intra - Uterine Contraceptive Device

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1. A
   Secretory phase, ovulation
2. B
   Proliferative phase, ovulation
3. C
   Secretory phase
4. D
   Proliferative phase, secretory phase

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1. A
   Seminal vesicles
2. B
   Fallopian tube
3. C
   Vagina
4. D
   Uterus

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1. A
   Only carpel
2. B
   Whole flower
3. C
   Only stamens and carpel
4. D
   Only ovary

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1. A
   Mosquito
2. B
   Virus
3. C
   Parasite
4. D
   Bacteria

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