Exam (elaborations)
HEREDITY AND GENETICS QUESTIONS AND ANSWERS
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Heredity and Genetics
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Name: Score:20 Multiple choice questions
Term 1 of 20
Complex diseases are caused by imperfections in multiple genes.
True
False
Term 2 of 20
Gene therapy is a commonly used process whereby normal genes are injected to replace
abnormal genes.
True
False
Term 3 of 20
Most genetic diseases cannot be cured, but they usually can be treated.
True
False
Term 4 of 20
Explain the causes and symptoms of sickle cell anemia.
Female eggs only have the X (female) chromosomes, while the male sperm cells have
both the X and Y (male) chromosomes. If the X from the male and X from the female
unite, then the child will be female. If the Y from the male and X from the female unite,
then the child will be male.
single-gene and chromosomal
Sickle cell anemia is caused by the red blood cells' inability to properly form
hemoglobin. The result is an inability to transfer oxygen and blood throughout the body.
As the name suggests, the traits controlled by dominant genes are more likely to appear
in our children. Recessive genes will only have an effect when the corresponding
dominant gene isn't present.
,Term 5 of 20
Which of the following are types of hereditary disorders?
single-gene and duplex
single-gene and chromosomal
encode a protein
complex and duplex
Term 6 of 20
Describe the chromosomes needed for an embryo to become a female and those needed for
an embryo to become a male.
Female eggs only have the X (female) chromosomes, while the male sperm cells have
both the X and Y (male) chromosomes. If the X from the male and X from the female
unite, then the child will be female. If the Y from the male and X from the female unite,
then the child will be male.
As the name suggests, the traits controlled by dominant genes are more likely to appear
in our children. Recessive genes will only have an effect when the corresponding
dominant gene isn't present.
Genetic counselors are important because they help families to identify the probability
of developing or transmitting a hereditary disease. In addition, they can provide
information about appropriate genetic testing to help in the decision-making process.
Finally, they provide support throughout the genetic testing process.
Sickle cell anemia is caused by the red blood cells' inability to properly form
hemoglobin. The result is an inability to transfer oxygen and blood throughout the body.
Term 7 of 20
Genetic research and testing includes __________.
analyzing historical genetic data
the Human Genome Project, gene therapy, genetically engineering drugs
only studying animal genetics
focusing solely on hereditary diseases
, Term 8 of 20
Complex genetic diseases are different from single-gene diseases because they __________.
are inherited from a single parent
are caused by mutations to multiple genes
are always visible in physical traits
result from environmental factors only
Term 9 of 20
The normal function of a gene is to __________.
regulate blood sugar levels
encode a protein
store energy for the cell
protect against infections
Term 10 of 20
The Human Genome Project __________.
started in the 1990s
was funded by private companies only
was completed in 2003
is still ongoing today
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