he inheritance pattern of traits such as PTC tasting can be diagrammed in a chart lled a pedigree. A pedigree illustrates the marriages for several generations thin a family and the children produced. Females are shown with circles and males are shown with squares. A black square or circle shows the presence of the condition being studied. A white square or circle means the condition is absent in that person. A marriage or mating is shown by a line connecting the parents. Children from a mating are shown by a vertical line between the parents. All individuals from the same generation are shown along the same horizontal line. After examining the pedigree key, determine the genotypes of all the people in this family. In a few cases, there may not be enough information to determine a person's second allele. In this situation, enter a question mark (?) in place of the second letter. John Joan Pauline Keith

Human Biology (MindTap Course List)
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Chapter20: Chromosomes And Human Genetics
Section: Chapter Questions
Problem 7CT: The following pedigree shows the pattern of inheritance of red-green color blindness in a family....
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The inheritance pattern of traits such as PTC tasting can be diagrammed in a chart
called a pedigree. A pedigree illustrates the marriages for several generations
within a family and the children produced.
■ Females are shown with circles and males are shown with squares.
■ A black square or circle shows the presence of the condition being studied.
A white square or circle means the condition is absent in that person.
▪ A marriage or mating is shown by a line connecting the parents.
■ Children from a mating are shown by a vertical line between the parents.
■ All individuals from the same generation are shown along the same horizontal
line.
After examining the pedigree key, determine the genotypes of all the people in this
family. In a few cases, there may not be enough information to determine a person's
second allele. In this situation, enter a question mark (?) in place of the second letter.
어
Miriam
Pam
John Joan
Alan Wendy Ann
tasters?
Jean Toby
Bill
C
Rita
Foto d
Howard
nontasters?
Pauline Keith
Tom Elizabeth
KEY
Male PTC nontaster
Female PTC nontaster
Male PTC taster
PTC Pedigree
Referring to the pedigree in Figure 10-1, if Jill marries Howard, what is the prob-
ability that their children will be
Female PTC taster
Transcribed Image Text:The inheritance pattern of traits such as PTC tasting can be diagrammed in a chart called a pedigree. A pedigree illustrates the marriages for several generations within a family and the children produced. ■ Females are shown with circles and males are shown with squares. ■ A black square or circle shows the presence of the condition being studied. A white square or circle means the condition is absent in that person. ▪ A marriage or mating is shown by a line connecting the parents. ■ Children from a mating are shown by a vertical line between the parents. ■ All individuals from the same generation are shown along the same horizontal line. After examining the pedigree key, determine the genotypes of all the people in this family. In a few cases, there may not be enough information to determine a person's second allele. In this situation, enter a question mark (?) in place of the second letter. 어 Miriam Pam John Joan Alan Wendy Ann tasters? Jean Toby Bill C Rita Foto d Howard nontasters? Pauline Keith Tom Elizabeth KEY Male PTC nontaster Female PTC nontaster Male PTC taster PTC Pedigree Referring to the pedigree in Figure 10-1, if Jill marries Howard, what is the prob- ability that their children will be Female PTC taster
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