Quiz #7
CHAPTER 14
HUMAN
CHROMOSOMES
1. A picture of a person's
chromosomes is called a(n)
_________________
2.- Down syndrome in humans
is due to _________________
.
3.- A Barr body is an inactivated
______ chromosome.
4.- Genes located on the X
or Y chromosomes
are
said to be ____ _______
genes.
5.- In __________ a protein
necessary for normal blood
clotting is missing.
6.- A ________ is when
homologous chromosomes
fail to separate during
meiosis.
7.- An __________ is a
chromosome that is not a
sex chromosome.
8.- The ____ ________, is
an analysis of sections
of DNA that have little or
no known function, and
are used to identify
individuals.
9.- In _____ _________ an
absent or faulty gene is
replaced by a normal, working
gene.
10.- The cat sex on the
picture above is _________.
Answers
1.- Karyotype
2.- Non-disjunction Trisomy 21
3.- X
4.- Sex-linked
5.- Hemophilia
6.- Non-disjuntion
7.- Autosome
8.- DNA fingerprinting
9.- Gene therapy
10.- Undetermined (more probably
to be a female)
Gabe is a rare male calico, discovered at the Cleveland APL. Calico
coloring occurs when a female's two X chromosomes carrying the
genetic code for three colors. The odds are one in 3,000 that a male
cat will inherit an extra X chromosome with his usual XY, APL director
Sharon Harvey said