Question 1
True or False: A chromosomal aberration
ion isi an alteration
i to the chromosome that results ini a chang
ange to
the total number of chromosomes, deletions or additions to the chromosome, or even complete
rearrangement of chromosomal segments.
. True
Question 2 0/2pts
True or False: Sex chromosomes occur in pairs.
.[ True
L
False
,Question 3 2/2pts
True or r False:
False: Trisomy
Tri: / and monosomy iin autosomal chromosomes is generally tolerated better in
animals than in plants.
False
Question 4 4/4pts
What is the only trisomy disorder in which individuals routinely live longer than one year? The
incidence of this disorder seems to increase with an increased age in which parent?
Your Answer:
The only trisomy disorder that has a greater than one year lifespan is down syndrome. Down syndrome
is linked to the mother. The likelihood of down syndrome occuring increases as the maternal age
increases.
live longer than
Down syndrome (trisomy 21) is trisomy disorder in which individuals routinely
al age.
one year, the incidence of which seems to increase with matern
, . 2/ 2pts
Question 5
True or False: Individuals that are afflicted with Down syndrome typically exhibit most, if not all, of the
stereotypical characteristics of the disorder.
. False
. 2/2ptpis
Question 6
The region of the chromosome 21 that is thought to be typically responsible for the phenotype of
Down syndrome is the
fi DSCR