Honors Biology
Genetics Test
2014
Name _____________________________ Date __________ Period _____
1.
A h um a n g e ne t i c d i s o r d e r t ha t r e d uc e s t he a b i l i t y t o c l o t b l o o d i s … ?
A.
Tay – Sachs disease
B.
Cystic f ibrosis
C.
Phenylketonuria
D.
Hemophilia
Huntington’s Disease Pedigree
2.
3.
In the above pedigree, how many males have Hunt ington’s disease?
A.
8
B.
4
C.
2
D.
0
In the above pedigree, what does an empty circle represent?
A.
A male with Hunt ington’s disease
B.
A f emale wit h Huntington’s disease
C.
A normal male
D.
A normal f emale
4.
5.
6.
7.
In the above pedigree, what is the genot ype of the f ather in generat ion I ?
A.
Homozygous dominant
B.
Homozygous recessive
C.
Heterozygous
D.
You cannot tell
W hich of the f ollowing can be obser ved in a person’s karyot ype?
A.
colorblindness
B.
hemophilia
C.
Trisomy 21
D.
None of the above
W hich of the f ollowing is caused by a sex -linked gene?
A.
Red-green color blindness
B.
Muscular dystrophy
C.
Down syndr ome
D.
Both A and B
A child has color blindness. W hich genotype -phenot ype combinat ion is
not possible in the child’s par ents?
A.
The f ather does not carry the allele and is not colorblind
B.
The mother carries t he gene and is not color blind
C.
The f ather carries the allele but is not colorblind
D.
The mother has t wo alleles and has color blindness
8.
9.
10.
11.
12.
A woman is homozygous f or A -blood type. A man has AB blood type.
W hat is the probability that the couple’s child will have B blood?
A.
0%
B.
25%
C.
75%
D.
100%
A c hi l d w ho s e p a r e nt s b o t h ha ve t yp e O b l o o d w i l l … . ?
A.
Inherit t wo dif f erent alleles f or blood t ype
B.
Be t ype O blood
C.
only have childr en with t ype O blood
D.
Be a great athlete
W hi c h o f t he f o l l o w i n g i s a n a ut o s o m a l r e c e s s i ve d i s o r d e r r e s ul t i n g i n a b ui l d up o f m uc o us i n t he l u ng s ?
A.
polydact yl
B.
Cystic f ibrosis
C.
Tay-Sachs
D.
Color blindness
A no r m a l h um a n d i p l o i d z y g o t e c o nt a i ns … .
A.
23 chromosomes
B.
44 autosomes and 2 sex chromosomes
C.
46 pairs of chromosomes
D.
46 autosomes
W hi c h o f t he f o l l o w i n g w o ul d b e a p o s i t i ve a d a p t a t i o n i n a n a r e a w he r e m a l a r i a
i s c o m m o nl y f o u nd ?
A.
Cystic f ibrosis
B.
Phenolketenuria
C.
Tay-Sachs
D.
Sickle cell
13.
W hi c h o f t he f o l l o w i n g d e s c r i b e s a no nd i s j u nc t i o n r e s ul t i n g i n T ur ne r ’ s
S y nd r o m e ?
A.
X
B.
XX
C.
XXY
D.
XY
The type of inheritance shown when a red -f lowering plant is crossed
with a white-f lowering plant to produce pink plants is…
14.
15.
16.
17.
A.
inbr eeding
B.
Incomplete dom inance
C.
codom inance
D.
Polygenic inher itance
W hich of the f ollowing is a sex -linked genetic disease?
A.
Tay-sachs
B.
High cholesterol
C.
hemophilia
D.
phenylketonur ia
If a f emale f ruit f ly heterozygous f or red eyes (X R X r ) is mated with a
white-eyed male (X r Y), what percent of off spring would have white eyes?
A.
0%
B.
25%
C.
50%
D.
75%
W hen cattle are mat ed, 25% of the off spring are red, 50% are roan, and 25%
are white. The cow with the roan hair has both red and white hairs on its body.
This trait is controlled by…..
A.
Multiple alleles
B.
codom inance
18.
C.
Sex- linked genes
D.
Polygenic inher itance
Because the gene f or red -green color blindness is located on the
X chromosome, it is normally not possible f or a…..
A.
Carrier mother to pass the gene to her daughter
B.
Carrier mother to pass the gene to her son
C.
Color blind f ather to pass the gene to his daughter
D.
Color blind f ather to pass the gene to his son
19.
20.
21.
Blood t yping is an example of ______ inheritance.
A.
recessive
B.
dominant
C.
Multiple alleles
D.
Sex- linked
The set of alleles that an individual has is called the…..
A.
genotype
B.
phenot ype
C.
Filial t ype
D.
Parental t ype
Step 1 of Gregor Mendel’s garden pea experiment produced t he….
A.
F 1 generat ion
B.
F 2 generat ion
C.
P generation
D.
P 2 gener ation
22.
23.
24.
25.
In the F2 generat ion of Gregor Mendel’s experiments, the ratio of
dominant to recessive traits was…..
A.
1 : 3
B.
1 : 2
C.
2 : 1
D.
3 : 1
The trait that was expressed in the F1 generation in Gregor Mendel’s
exper iment is considered
A.
recessive
B.
dominant
C.
parental
D.
homozygous
Mendel’s law of segregation states that….
A.
Pair s of alleles are dependent on one another when separat ion occurs
during the f ormation of gametes.
B.
Pair s of alleles remain together dur ing the f ormation of gametes
C.
The members of each pair of alleles rem ain together when gametes are
f ormed.
D.
The members of each pair of alleles separate when gametes are f ormed.
Klinef elter’s syndrome results f rom inheriting an additional X chromosome,
this is the result of ….
A.
nondisjunction
B.
disjunction
C.
Nonf unctional alleles
D.
Multiple alleles
26.
27.
28.
One version of a gene is called a (an )…….
A.
allele
B.
DNA
C.
chromosome
D.
spindle f iber
W hy did Gregor Mendel select the garden pea plant f or his
exper iments?
A.
The church was against the use of animals
B.
He could cult ivat e many generat ions in a short amount of time
C.
The plants had char acterist ics that br ed true
D.
All of the above
Barr bodies are dense regions in the nucleus produced by… ?
A.
Codom inant inher itance
B.
Multiple alleles
C.
X-chromosome inactivat ion
D.
nondisjunction