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In some sheep, the presence of beards (B/B') and horns (H/H') are sex-influenced traits. BB and HH result in beards and horns in both sexes, but the allele that results in beards is recessive in females and dominant in males in the heterozygous state. Likewise, the allele that results in horns is recessive in females and dominant in males in the heterozygous state. The parents of a female sheep with a beard and no horns are a horned female with no beard and a male with a beard and no horns. What are the genotypes of the three sheep (female, mother and father)? Use "?" for any unknown alleles and explain why the allele/s cannot be determined.

In some sheep, the presence of beards (B/B') and horns (H/H') are sex-influenced traits. BB and HH result in beards and horns in both sexes, but the allele that results in beards is recessive in females and dominant in males in the heterozygous state. Likewise, the allele that results in horns is recessive in females and dominant in males in the heterozygous state. The parents of a female sheep with a beard and no horns are a horned female with no beard and a male with a beard and no horns. What are the genotypes of the three sheep (female, mother and father)? Use "?" for any unknown alleles and explain why the allele/s cannot be determined.

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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can you please give a quick explanation? thank you

In some sheep, the presence of beards (B/B') and horns (H/H') are sex-influenced traits. BB and HH result in beards and horns in both sexes, but the allele that results in beards is recessive in females and dominant in males in the heterozygous state. Likewise, the allele that results in horns is recessive in females and dominant in males in the heterozygous state. The parents of a female sheep with a beard and no horns are a horned female with no beard and a male with a beard and no horns. What are the genotypes of the three sheep (female, mother and father)? Use "?" for any unknown alleles and explain why the allele/s cannot be determined.
Transcribed Image Text:In some sheep, the presence of beards (B/B') and horns (H/H') are sex-influenced traits. BB and HH result in beards and horns in both sexes, but the allele that results in beards is recessive in females and dominant in males in the heterozygous state. Likewise, the allele that results in horns is recessive in females and dominant in males in the heterozygous state. The parents of a female sheep with a beard and no horns are a horned female with no beard and a male with a beard and no horns. What are the genotypes of the three sheep (female, mother and father)? Use "?" for any unknown alleles and explain why the allele/s cannot be determined.
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