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How would you determine if a gene is sex-linked?
Related Topics
Wize University Biology Textbook > Mendelian Genetics
Inheritance of X-Linked Traits
4 Activities
How would you determine if a gene is sex-linked?
a. Conduct a test cross between a homozygous dominant and homozygous
recessive individual
b. Conduct a reciprocal cross where you cross a female showing a recessive
phenotype with a male showing a dominant phenotype, and then do the
opposite.
c. You can’t, its impossible
d. Cross a female showing a dominant phenotype with a male showing a dominant
phenotype
I don't know
Check Submission
More Inheritance of X-Linked Traits Questions:
Inheritance of traits practice problem 3
In cats, big ears are dominant over short ears, and the gene is autosomal. Another gene controls eye colour, and is X-linked. "E" gives brown eyes, "e" gives blue eyes, and Ee gives green eyes.
Brown eyed male with the homozygous genotype for big ears is mated with a female with short ears and green eyes. What kittens could be produced?
Note:
X-linked traits are on the X chromosome. Females have two X chromosomes while males have one X chromosome and one Y chromosome.
Dihybrid cross
Why are sex-linked diseases more likely to affect males?
Dihybrid cross
Why are sex-linked diseases more likely to affect males?
Inheritance of traits practice problem 3
In cats, big ears are dominant over short ears, and the gene is autosomal. Another gene controls eye colour, and is X-linked. "E" gives brown eyes, "e" gives blue eyes, and Ee gives green eyes.
Brown eyed male with the homozygous genotype for big ears is mated with a female with short ears and green eyes. What kittens could be produced?
Note:
X-linked traits are on the X chromosome. Females have two X chromosomes while males have one X chromosome and one Y chromosome.
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Pedigree practice problem 2
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Pedigree practice problem
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked:
Inheritance of traits
In cats, big ears are dominant over short ears, and the gene is autosomal. Another gene controls eye colour, and is X-linked. "E" gives brown eyes, "e" gives blue eyes, and Ee gives green eyes.
Brown eyed male with the homozygous genotype for big ears is mated with a female with short ears and green eyes. What kittens could be produced?
Note: X-linked traits are on the X chromosome. Females have two X chromosomes while males have one X chromosome and one Y chromosome.
How would you determine if a gene is sex-linked?
A certain X-linked dominant disease in humans occurs when there are more than 30 repeats of a GAC trinucleotide in a particular gene. The unique sequence outside the repeat region is as follows:
5' CAGTATGCA------(GAC)n-------ATGCGTAAT 3'
3' GTCATACGT------(GAC)n-------TACGCATTA 5'
Practice: Pedigree
Identify if pedigree is autosomal dominant, autosomal recessive, or X-linked: