Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Pedigree information regarding the incidence of Tay-Sachs within a family is depicted above. The row below that indicates the genotypes of individuals II-1, II-2, and III-1 is
Select one:
a.
II-1 II-2 III-1
Aa Aa aa
 
b.
II-1 II-2 III-1
XAY XAXA XaXa
 
Pedigree of a Family with Tay-Sachs Disease
1
2
3
4
II
II
1 2
3 4
-
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Transcribed Image Text:Pedigree of a Family with Tay-Sachs Disease 1 2 3 4 II II 1 2 3 4 -
Pedigree Conventions
Identical
twins
Male
Female
Non-identical
twins
Mating
Affected
individuals
Mating between
close relatives
Unaffected
individuals
Roman numerals
I
symbolize generations
Arabic numbers
symbolize individuals
within a given
generation
II
2 3
Birth order, within each
group of offspring, is
drawn left to right,
oldest to youngest
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Transcribed Image Text:Pedigree Conventions Identical twins Male Female Non-identical twins Mating Affected individuals Mating between close relatives Unaffected individuals Roman numerals I symbolize generations Arabic numbers symbolize individuals within a given generation II 2 3 Birth order, within each group of offspring, is drawn left to right, oldest to youngest
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