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WorksheetsModule 3: Genetics
Total questions: 10
Worksheet time: 8mins
What is a genotype?
genetic information
expression of genes
hair color
eye color
What is true of an X-linked disorder?
Heterozygous females are carriers
Homozygous females are carriers
affected allele is carried on the Y chromosome
Huntington's is an example of an X-linked disorder
What is true of autosomal dominant disorders?
There are no carriers
Both parents have to carry the allele
Duchenne muscular dystrophy is an example
Unaffected persons can pass on the disorder
Cleft palate is an example of...
Autosomal dominant disorder
autosomal recessive disorder
multifactorial disorder
X-linked disorder
Developmental disorders occur when?
During pregnancy
During childhood
During adulthood
At any time
What is an example of an X-linked dominant disorder?
Hemophilia A
Hemophilia B
Duchenne muscular dystrophy
Fragile X syndrome
If the mother is heterozygous for cystic fibrosis, and the father is homozygous unaffected, what ratio of their children will have cystic fibrosis?
25%
50%
75%
0%
A mother is heterozygous for hemophilia. The father is unaffected by hemophilia. What percentage of their SONS will have hemophilia?
25%
50%
75%
100%
What is NOT a single gene disorder?
cystic fibrosis
Tay-Sachs
Fragile-X
Diabetes
What are some diagnostic tools for genetic disorders?
Carrier screening
Amniocentesis
Genetic screening of infant
All the answers are correct
