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Genetics
Test Description: DNA, traits
Instructions: Answer all questions to get your test result.
1) What shape is DNA?
A
long
B
double helix
C
strand
D
single helix
2) What does DNA stand for?
A
deoxyribonucleic acid
B
deoxygenucleic acid
C
deoxyribbonucleic acid
D
detoxyribonucleic acid
3) DNA is made of four bases. What letters represent the bases?
A
TCAX
B
GACY
C
CATU
D
ATCG
4) How do the DNA bases pair up?
A
CT, AG
B
TA, CA
C
AT, CG
D
CG, TC
5) A notable feature or quality is a
A
base
B
chromosome
C
allele
D
trait
6) Two types of traits are
A
genetical and environmental
B
all of the above
C
physique and inherited
D
inherited and environmental
7) People inherit traits from
A
all of the above
B
offspring
C
siblings
D
parents
8) Eye color is an example of an
A
inherited trait
B
genetical trait
C
none of the above
D
environmental trait
9) Where in a cell are chromosomes located?
A
vacuole
B
nucleus
C
cytoplasm
D
cell membrane
10) Human cells have how many chromosomes in them?
A
impossible to tell
B
46
C
23
D
1
11) The language you speak is what type of trait?
A
physical
B
inherited
C
environmental
D
chromosomal
12) Segments of DNA are called
A
bases
B
genes
C
alleles
D
traits
13) What does heterozygous mean?
A
same
B
different
C
allele
D
DNA
14) What does phenotype mean?
A
physical feature
B
allele pairs
C
homozygous
D
genetic combination
15) What tool is used to determine the probability of offspring genotypes and phenotypes?
A
punnett square
B
ladder
C
microscope
D
hammer
16) What type of letter represents a dominant allele?
A
A, T, C, or G
B
upper case
C
any type of letter
D
lower case
17) What does homozygous mean?
A
phenotype
B
same
C
allele
D
different
18) Which of the following is an example of a heterozygous genotype?
A
Gg
B
gg
C
GG
D
GG, gg
19) Which of the following is an example of a homozygous recessive genotype?
A
GG, gg
B
Gg
C
gg
D
GG
20) What happens when bases don't match up correctly?
A
alleles
B
mutations
C
genotypes
D
traits
*select an answer for all questions
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