1) 12) 23) 34) 45) 26) 17) 38) 39) 310) 211) 312) 213) 3

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14) 215) 2

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16a) False16b) Not possible to tell16c) True16d) False

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17a)

No. The length of hair is not obtained through inheritance. Everyone has a choice of long or short hair.

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17b)

Colour of hairColour of eyesHeightSkin ColourHitchhiker's thumbDetached or attached earlobes(Any other acceptable answers)

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18a)

C

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18b)

J is Corrine’s niece

X Corrine is J’s aunt.

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18c)

F is B’s daughter.

X B is F’s father.

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19a)

i) Penisii) Testis

19b)

i) Wombii) Ovary

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20)

I do not agree. The ability of roll tongue is a hereditary characteristic passed from parents to young and cannot be learnt.

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21)

Refer to Mr Lee’s drawing.

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22)

A: EggB: Sperm

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23)

Plant Human

Ovary Ovary

Ovum Egg/Ovum ( X Ova)

Anther Testis

Pollen grain Sperm

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