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