Q4 of 44 Page 1

Name the disorder caused due to the absence of one of the X-chromosomes in a human female.

The disorder caused to the absence of one of the X-chromosomes in a human female is Turner syndrome, a condition which affects only females, resulting when one of the X chromosomes (sex chromosomes) is missing or partially missing in the individual. Such females are sterile because their ovaries are rudimentary and there is lack of other secondary sexual characters.


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2

List any two characters of Pea plants used by Mendel in his experiments other than height of the plant and the colour of the seed.

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Mention the role of Restriction Enzymes in Recombinant DNA technology.

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Name the type of asexual reproduction where the parent cell ceases to exist.

 6

Name and state the effect of a drug that is often medically prescribed, but its overuse leads to drug dependence and drug abuse.