NSG 533 Advanced Pathophysiology TEST WITH
CORRECT SOLUTIONS.
, Sex-linked traits - correct ans:Traits that are inherited with sex chromosomes
Autosomal traits - correct ans:Traits that are inherited with non-sex
chromosomes
X-linked recessive disorders - correct ans:Genetic variants on the X
chromosome; more common in males. Both copies of the gene must be
altered in female, but only one copy must be altered in males. Ex:
colorblindness.
X-linked dominant disorders - correct ans:Genetic variants on the X
chromosome. Only one altered copy of the gene is needed to cause the
condition in both males and females. Very rare.
Autosomal dominant disorders - correct ans:Caused by variants in genes
found on non-sex chromosomes. Only one altered copy of the gene is needed
to cause an effect. Ex: Huntington dx.
Autosomal recessive disorders - correct ans:Caused by variants in genes
found on non-sex chromosomes. Both copies of the gene must be altered to
cause an effect. Ex: cystic fibrosis.
Lack of variability in a species may lead to more ________ . - correct
ans:autosomal recessive disorders
Define heterozygote advantage - correct ans:An individual with one mutated
copy of a gene and one normal copy may have advantages against certain
pathogens without suffering from symptoms of the disease. Explains why
certain diseases stay prevalent over history in geographical regions or
cultures.
CORRECT SOLUTIONS.
, Sex-linked traits - correct ans:Traits that are inherited with sex chromosomes
Autosomal traits - correct ans:Traits that are inherited with non-sex
chromosomes
X-linked recessive disorders - correct ans:Genetic variants on the X
chromosome; more common in males. Both copies of the gene must be
altered in female, but only one copy must be altered in males. Ex:
colorblindness.
X-linked dominant disorders - correct ans:Genetic variants on the X
chromosome. Only one altered copy of the gene is needed to cause the
condition in both males and females. Very rare.
Autosomal dominant disorders - correct ans:Caused by variants in genes
found on non-sex chromosomes. Only one altered copy of the gene is needed
to cause an effect. Ex: Huntington dx.
Autosomal recessive disorders - correct ans:Caused by variants in genes
found on non-sex chromosomes. Both copies of the gene must be altered to
cause an effect. Ex: cystic fibrosis.
Lack of variability in a species may lead to more ________ . - correct
ans:autosomal recessive disorders
Define heterozygote advantage - correct ans:An individual with one mutated
copy of a gene and one normal copy may have advantages against certain
pathogens without suffering from symptoms of the disease. Explains why
certain diseases stay prevalent over history in geographical regions or
cultures.
