Q4 of 32 Page 31

List any four traits in humans which you can easily study just by observing and making

Family charts.


(i) …………………………… (ii) ………………………………………


(iii) ………………………… (iv) ………………………………………

(i) Colour-blindness (X-linked inheritance)

(ii) Haemophilia (X-linked inheritance)


(iii) Hypertrichosis of ears (Y-linked inheritance)


(iv) Pattern baldness (Y-linked inheritance)


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2

Give the common and scientific names of the Organism of which Gregor Mendel had worked.

Common name …………………………


Scientific name …………………………

 3

Define the following terms:

(i) Monohybrid ………………………


(ii) Dihybrid ……………………………


(iii) Filial generation …………………

 1

Which one of the following has the smallest number of chromosomes?

 2

Which one of the following is the phenotypic monohybrid ratio in an F2 generation?