List any four traits in humans which you can easily study just by observing and making family charts.
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Eye colour (Brown/Blue), Hand (Left/Right Handedness), Earlobe (Free/Attached) and Cheeks (Dimpled/Normal).
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Mention the number of paired homozygous chromosomes in
(i) Human female
(ii) Human male
Can there be a heterozygous recessive? Explain.
Who discovered for the first time the basic principles of genetics?
Give the common and scientific names of the organism on which Gregor Mendel had worked.