Download Sex Linked Traits

Name: ______________________________________ Date: ___________________Period: ________ Assign#: ________
Sex Linked Traits
1. Female genotype: __________
Male genotype: ___________
Y-Chromosome facts:
X-Chromosome facts:
Where do ‘sex-linked’ traits normally occur?:
Why are males most likely to get sex-linked genetic conditions?
What happens to the female’s second copy of the X chromosome?
Write the genotypes and phenotypes of calico colored cats below:
Sex
Genotype(s)
Male
Phenotype(s)
Female
Example:
1. Colorblind:
Why are most colorblind individuals male?
How to write Alleles for X-Linked traits:
Women:
Normal: _________
Carrier: __________
Men:
Normal: _________
Colorblind: ________
Colorblind: ________
2. Hemophilia:
How often does it occur in men? ___________________How often does it occur in women? _______________
4. What are sex-influenced traits? Give an example.
Name: ______________________________________ Date: ___________________Period: ________ Assign#: ________
Sex Linked Traits
2. Female genotype: __________
Male genotype: ___________
Y-Chromosome facts:
X-Chromosome facts:
Where do ‘sex-linked’ traits normally occur?:
Why are males most likely to get sex-linked genetic conditions?
What happens to the female’s second copy of the X chromosome?
Write the genotypes and phenotypes of calico colored cats below:
Sex
Genotype(s)
Male
Phenotype(s)
Female
Example:
3. Colorblind:
Why are most colorblind individuals male?
How to write Alleles for X-Linked traits:
Women:
Normal: _________
Carrier: __________
Men:
Normal: _________
Colorblind: ________
Colorblind: ________
4. Hemophilia:
How often does it occur in men? ___________________How often does it occur in women? _______________
5. What are sex-influenced traits? Give an example.
Chromosomal Abnormalities – 3 Main Categories
Down Syndrome:
Cause:
Phenotype/Description:
Klinefelter’s Syndrome:
Cause/Genotype:
Phenotype/Description:
Jacob’s Syndrome:
Cause/Genotype:
Phenotype/Description:
Trisomy X:
Cause/Genotype:
Phenotype/Description:
Turner Syndrome:
Cause/Genotype:
Phenotype/Description:
Replication errors:
1) _______________________________ 2) _________________________________
Crossing Over errors
1) _______________________________ 2) _________________________________
What is an XY female? How would an XY female form?
What is a hermaphrodite? Is it possible in humans?
1. What are the types of twins and how are they formed:
Type
Monozygotic
Dizygotic
Conjoined
Rarity
Formation/Important facts
Chromosomal Abnormalities – 3 Main Categories
Down Syndrome:
Cause:
Phenotype/Description:
Klinefelter’s Syndrome:
Cause/Genotype:
Phenotype/Description:
Jacob’s Syndrome:
Cause/Genotype:
Phenotype/Description:
Trisomy X:
Cause/Genotype:
Phenotype/Description:
Turner Syndrome:
Cause/Genotype:
Phenotype/Description:
Replication errors:
1) _______________________________ 2) _________________________________
Crossing Over errors
1) _______________________________ 2) _________________________________
What is an XY female? How would an XY female form?
What is a hermaphrodite? Is it possible in humans?
1. What are the types of twins and how are they formed:
Type
Monozygotic
Dizygotic
Conjoined
Rarity
Formation/Important facts