Ensure answers are clearly labelled 1a, 1b and 2. Part 1: Consider three autosomal genes (E, F and G) present in a hypothetical species. The E allele results in male development, the e allele results in female development while the heterozygote develops as a hermaphroditic, sterile individual. The genes at the F and G loci show complete dominance, with the dominant alleles producing long tails (F) and black whiskers (G), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a short tail and black whiskers with a female that has a long tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) What is the sexual phenotype of the F1 offspring? b) Another batch of five offspring are expected from the same parents. What is the probability of the first offspring having a long tail and black whiskers? Part 2: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows complete penetration. A red-feathered female mates with a blue-feathered male, and all the F1 males are blue-feathered and the F1 females are red-feathered. When the F1 individuals are crossed, all the F2 males are again blue-feathered and the F1 females are again red-feathered. Provide the genotype of the F2 males and females. Clearly indicate which genotype is associated with males and females, respectively.
Ensure answers are clearly labelled 1a, 1b and 2. Part 1: Consider three autosomal genes (E, F and G) present in a hypothetical species. The E allele results in male development, the e allele results in female development while the heterozygote develops as a hermaphroditic, sterile individual. The genes at the F and G loci show complete dominance, with the dominant alleles producing long tails (F) and black whiskers (G), while the recessive alleles produce short tails and grey whiskers, respectively. You cross a male with a short tail and black whiskers with a female that has a long tail and black whiskers. All the F1 individuals recovered have long tails, with some having black whiskers and others having grey whiskers. a) What is the sexual phenotype of the F1 offspring? b) Another batch of five offspring are expected from the same parents. What is the probability of the first offspring having a long tail and black whiskers? Part 2: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows complete penetration. A red-feathered female mates with a blue-feathered male, and all the F1 males are blue-feathered and the F1 females are red-feathered. When the F1 individuals are crossed, all the F2 males are again blue-feathered and the F1 females are again red-feathered. Provide the genotype of the F2 males and females. Clearly indicate which genotype is associated with males and females, respectively.
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter7: Development And Sex Determination
Section: Chapter Questions
Problem 12QP: Mutations Can Uncouple chromosomal Sex from Phenotypic Sex Discuss whether the following individuals...
Related questions
Question
Transcribed Image Text:Ensure answers are clearly labelled 1a, 1b and 2.
Part 1:
Consider three autosomal genes (E, F and G) present in a hypothetical species. The E allele results in male development, the e allele results in female
development while the heterozygote develops as a hermaphroditic, sterile individual. The genes at the F and G loci show complete dominance, with the
dominant alleles producing long tails (F) and black whiskers (G), while the recessive alleles produce short tails and grey whiskers, respectively. You cross
a male with a short tail and black whiskers with a female that has a long tail and black whiskers. All the F1 individuals recovered have long tails, with
some having black whiskers and others having grey whiskers.
a) What is the sexual phenotype of the F1 offspring?
b) Another batch of five offspring are expected from the same parents. What is the probability of the first offspring having a long tail and black whiskers?
Part 2:
In a species of bird, feather colour is determined by a single, non-autosomal gene that shows complete penetration. A red-feathered female mates with a
blue-feathered male, and all the F1 males are blue-feathered and the F1 females are red-feathered. When the F1 individuals are crossed, all the F2
males are again blue-feathered and the F1 females are again red-feathered.
Provide the genotype of the F2 males and females. Clearly indicate which genotype is associated with males and females, respectively.
Binomial Expansion
1
a+b
2
o+ 2ab + b
3
a+ 30'b+ 3ab+b
4
a+ 40'b + 6a'b + 4ab'+ b
5
a+ Sab+ 100'b2 + 10a²b³ + Sab + b
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Recommended textbooks for you
Human Heredity: Principles and Issues (MindTap Co…
Biology
ISBN:
9781305251052
Author:
Michael Cummings
Publisher:
Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:
9781305112100
Author:
Cecie Starr, Beverly McMillan
Publisher:
Cengage Learning
Human Heredity: Principles and Issues (MindTap Co…
Biology
ISBN:
9781305251052
Author:
Michael Cummings
Publisher:
Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:
9781305112100
Author:
Cecie Starr, Beverly McMillan
Publisher:
Cengage Learning