HEREDITY
MULTIPLE ALLELES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Vertical Line
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Horizontal Line
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Detailed explanation-1: -A male is represented by a square or the symbol ♂, a female by a circle or the symbol ♀. Mating is shown by a horizontal line (marriage line) connecting a male symbol and a female symbol; offspring symbols are connected in a row (sibship line) beneath the mated pair.
Detailed explanation-2: -A horizontal line connecting a male and female represents a marriage. A vertical line and a bracket connect the parents to their children. A half-shaded circle or square indicates that a person is a carrier of the trait. A completely shaded circle or square indicates that a person expresses the trait.
Detailed explanation-3: -Circles represent females and squares represent males. Each individual is represented by: – a Roman Numeral, which stands for the generation in the family, – a Digit, which stands for the individual within the generation.
Detailed explanation-4: -In pedigree analysis a square joined with a circle by a single line means marriage whereas a square joined by two lines with a circle means mating between relatives (consanguineous marriage).
Detailed explanation-5: -Within each generation, people are numbered from left to right with Arabic numerals. Siblings are usually listed by age, with the oldest on the left. Thus, each member of the pedigree can be identified by 2 numbers (eg, II, 4). A spouse is also assigned an identifying number.