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WorksheetsBiology Keystone Final Review
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
DNA consists of repeating subunits called
a)
nucleotides
b)
amino acids
c)
fatty acids
d)
monosaccharides
2.
What base is unique to DNA?
a)
thymine
b)
uracil
c)
cytosine
d)
guanine
3.
All nucleotides of DNA and RNA contain
a)
uracil
b)
thymine
c)
deoxyribose
d)
phosphate group
4.
DNA is in the shape of a
a)
double helix
b)
clover leaf
c)
single strand
d)
ice cream cone
5.
What type of RNA carries genetic info from the nucleus to ribosomes?
a)
mRNA
b)
tRNA
c)
rRNA
d)
snRNA
6.
Alleles for 2 different traits found on the same chromosome are said to be
a)
linked
b)
autosomal
c)
recessive
d)
dominant
7.
Chromosomes split during ___ of mitosis
a)
anaphase
b)
metaphase
c)
prophase
d)
telophase
8.
During prophase I of meiosis, chromosomes can switch sections of DNA in a process called
a)
crossing over
b)
synapsis
c)
metaphase
d)
cytokinesis
9.
Since Darwin's time, knowledge of heredity has lead to
a)
addition of Lamarck's use and disuse theory
b)
increased support for the theory of natural selection
c)
disagreement with Mendel
d)
elimination of all evolution theories
10.
What two alleles for blood type show codominance
a)
A and B
b)
A and O
c)
B and O
11.
Using mRNA, tRNA and ribosomes to build a protein is called
a)
replication
b)
transcription
c)
translation
d)
meiosis
12.
What scientist came up with principles of dominance/recessiveness, segregation, and independent assortment?
a)
Watson
b)
Linnaeus
c)
Mendel
d)
Morgan
13.
If a cell's diploid number 36, the gametes have ___ chromosomes.
a)
36
b)
18
c)
6
d)
72
14.
During cytokinesis, plant cells form a
a)
cell plate
b)
lunch plate
c)
cleavage furrow
d)
cleavage bridge
15.
The mitotic spindle in animal cells contains the
a)
centrioles
b)
chromosomes
c)
nucleus
d)
cytoskeleton
16.
Mitosis is represented by
a)
n --> n
b)
2n --> 2n
c)
2n --> n
d)
n --> 2n
17.
When a piece of one chromosome transfers to a non homologous chromosome, ____ has occurred.
a)
translocation
b)
nondisjunction
c)
inversion
d)
duplication
18.
A change in the sequence of nucleotides in DNA is called a
a)
mutation
b)
mistake
c)
carcinogen
19.
Meiosis results in
a)
4 haploid cells
b)
4 diploid cells
c)
2 diploid cells
d)
2 haploid cells
20.
A shaded symbol on a pedigree means the person
a)
doesn't show the trait
b)
shows the trait
c)
is a carrier of the trait
d)
is homozygous dominant
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