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Consider three autosomal genes (A, B and D) present in a hypothetical species. The a allele results in male development, the A allele results in female development while a heterozygote produced hermaphroditic development, rendering the individual sterile. The genes at the B and D loci show complete dominance, with the dominant alleles producing long tails (B) and black whiskers (D), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a long tail and black whiskers with a female that has a short tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) All the F1 offspring are sterile. Why is this the case?

Consider three autosomal genes (A, B and D) present in a hypothetical species. The a allele results in male development, the A allele results in female development while a heterozygote produced hermaphroditic development, rendering the individual sterile. The genes at the B and D loci show complete dominance, with the dominant alleles producing long tails (B) and black whiskers (D), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a long tail and black whiskers with a female that has a short tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) All the F1 offspring are sterile. Why is this the case?

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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Consider three autosomal genes (A, B and D) present in a hypothetical species. The a allele results in male development, the A allele results in female development while a heterozygote produced hermaphroditic development, rendering the individual sterile. The genes at the B and D loci show complete dominance, with the dominant alleles producing long tails (B) and black whiskers (D), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a long tail and black whiskers with a female that has a short tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) All the F1 offspring are sterile. Why is this the case?
Transcribed Image Text:Consider three autosomal genes (A, B and D) present in a hypothetical species. The a allele results in male development, the A allele results in female development while a heterozygote produced hermaphroditic development, rendering the individual sterile. The genes at the B and D loci show complete dominance, with the dominant alleles producing long tails (B) and black whiskers (D), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a long tail and black whiskers with a female that has a short tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) All the F1 offspring are sterile. Why is this the case?
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