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Homozygous recessives from inbreeding 2 one Ala one A/A 2 3 4 A/A A/a Ala A/A II 1 2 A/- AF A- A- Ala 3 4 5 6 A/a IV 1 2 3 45 A- ala A- ala A- The FIGURE 2-19 Pedigree of a rare recessive phenotype determined by a recessive allele a. Gene symbols are normally not included in pedigree charts, but genotypes are inserted here for reference. Persons Il-1 and I-5 marry into the family; they are assumed to be normal because the heritable condition under scrutiny is rare. Note also that it is not possible to be certain of the genotype in some persons with normal phenotype; Such persons are indicated by A/-. Persons III-5 and I-6, who generate the recessives in generation IV, are first cousins. They both obtain their recessive allele from a grandparent, either l-1 or l-2. unrelate sometir heteroz Figure 2 gotes fa heteroz two coL ancesto the rare run a hi relative people Som Cystic f rules as

Homozygous recessives from inbreeding 2 one Ala one A/A 2 3 4 A/A A/a Ala A/A II 1 2 A/- AF A- A- Ala 3 4 5 6 A/a IV 1 2 3 45 A- ala A- ala A- The FIGURE 2-19 Pedigree of a rare recessive phenotype determined by a recessive allele a. Gene symbols are normally not included in pedigree charts, but genotypes are inserted here for reference. Persons Il-1 and I-5 marry into the family; they are assumed to be normal because the heritable condition under scrutiny is rare. Note also that it is not possible to be certain of the genotype in some persons with normal phenotype; Such persons are indicated by A/-. Persons III-5 and I-6, who generate the recessives in generation IV, are first cousins. They both obtain their recessive allele from a grandparent, either l-1 or l-2. unrelate sometir heteroz Figure 2 gotes fa heteroz two coL ancesto the rare run a hi relative people Som Cystic f rules as

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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In Figure 2-19, assume that the pedigree is for mice, in
which any chosen cross can be made. If you bred IV-1
with IV-3, what is the probability that the first baby will
show the recessive phenotype?

Homozygous recessives from inbreeding 2 one Ala one A/A 2 3 4 A/A A/a Ala A/A II 1 2 A/- AF A- A- Ala 3 4 5 6 A/a IV 1 2 3 45 A- ala A- ala A- The FIGURE 2-19 Pedigree of a rare recessive phenotype determined by a recessive allele a. Gene symbols are normally not included in pedigree charts, but genotypes are inserted here for reference. Persons Il-1 and I-5 marry into the family; they are assumed to be normal because the heritable condition under scrutiny is rare. Note also that it is not possible to be certain of the genotype in some persons with normal phenotype; Such persons are indicated by A/-. Persons III-5 and I-6, who generate the recessives in generation IV, are first cousins. They both obtain their recessive allele from a grandparent, either l-1 or l-2. unrelate sometir heteroz Figure 2 gotes fa heteroz two coL ancesto the rare run a hi relative people Som Cystic f rules as
Transcribed Image Text:Homozygous recessives from inbreeding 2 one Ala one A/A 2 3 4 A/A A/a Ala A/A II 1 2 A/- AF A- A- Ala 3 4 5 6 A/a IV 1 2 3 45 A- ala A- ala A- The FIGURE 2-19 Pedigree of a rare recessive phenotype determined by a recessive allele a. Gene symbols are normally not included in pedigree charts, but genotypes are inserted here for reference. Persons Il-1 and I-5 marry into the family; they are assumed to be normal because the heritable condition under scrutiny is rare. Note also that it is not possible to be certain of the genotype in some persons with normal phenotype; Such persons are indicated by A/-. Persons III-5 and I-6, who generate the recessives in generation IV, are first cousins. They both obtain their recessive allele from a grandparent, either l-1 or l-2. unrelate sometir heteroz Figure 2 gotes fa heteroz two coL ancesto the rare run a hi relative people Som Cystic f rules as
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