Prentice Hall School

ANSWERS
Super Read! Worksheet 2.2


1.

 Example

Question

Tay-Sachs disease What is Tay-Sachs disease?
Tay-Sachs disease How is Tay-Sachs disease transmitted?
Tay-Sachs disease Why is the allele for Tay-Sachs disease preserved in the population?
Cystic fibrosis What causes cystic fibrosis?
Cystic fibrosis What are the symptoms of cystic fibrosis?
Albinism Why are people born with albinism?
Albinism What characteristics are associated with albinism?
Albinism How is albinism different from some other genetic disorders?

2.
a
. Who? prospective parents aware of genetic disorders in their family history
b. What? genetic counseling
c. Where? genetic counselor's office
d. When? when a couple plans to have children
e. Why? to gain information about the probabilities of passing genetic disorders
on to their offspring
f. How? tracing family histories, making a pedigree, molecular techniques

3.

 Karotypes allow researchers to
study differences in chromosomes.

 How is a Karotype made? When is a Karotype useful? What can a Karotype show?
freeze cells in metaphase
stain chromosomes
photograph chromosomes
for genome studies
for genetic counseling
disjunction
monosomy
trisomy
Down's Syndrome
polyploidy




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