Q43 of 167 Page 193

A gene is a:

Part of a chromosome that transmits a trait

Gene is present in pairs on chromosome and they transmit characteristics to offspring from parent.

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41

The human animal which has an XY pair of chromosomes is called:

 42

The science of heredity is known as:

 44

A normal cell of human body contains 23 pairs of chromosomes. The number of chromosomes in a sex cell

(Sperm or ovum) of a human being is most likely to be:

 45

In order to ensure that he had pure-breeding plants for his experiments, Mendel: