HEREDITY
THE PEDIGREE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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fully shaded circle
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fully shaded square
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empty circle
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empty square
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half-shaded square
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Detailed explanation-1: -A completely shaded circle or square indicates that a person expresses the trait. A circle or square that is not shaded indicates that a person neither expresses the trait nor is a carrier of the trait.
Detailed explanation-2: -In pedigree analysis, normal male and normal females are represented by “square” and “circle” respectively. The affected male and affected females are represented by “shaded square” and “shaded circle” respectively.
Detailed explanation-3: -Homozygous. Having two identical alleles for a particular gene. Heterozygous. Having two different alleles for a particular gene.
Detailed explanation-4: -Shaded symbols mean an individual is affected by a condition, while an unshaded symbol means they are unaffected. A horizontal line between man and woman represents mating and resulting children are shown as offshoots to this line.