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Genetics
Test Description: DNA, traits
Instructions: Answer all questions to get your test result.
1) What shape is DNA?
A
strand
B
long
C
double helix
D
single helix
2) What does DNA stand for?
A
deoxyribonucleic acid
B
detoxyribonucleic acid
C
deoxyribbonucleic acid
D
deoxygenucleic acid
3) DNA is made of four bases. What letters represent the bases?
A
TCAX
B
ATCG
C
CATU
D
GACY
4) How do the DNA bases pair up?
A
CG, TC
B
CT, AG
C
AT, CG
D
TA, CA
5) A notable feature or quality is a
A
trait
B
allele
C
chromosome
D
base
6) Two types of traits are
A
all of the above
B
inherited and environmental
C
physique and inherited
D
genetical and environmental
7) People inherit traits from
A
siblings
B
offspring
C
parents
D
all of the above
8) Eye color is an example of an
A
genetical trait
B
inherited trait
C
none of the above
D
environmental trait
9) Where in a cell are chromosomes located?
A
cell membrane
B
nucleus
C
cytoplasm
D
vacuole
10) Human cells have how many chromosomes in them?
A
46
B
1
C
impossible to tell
D
23
11) The language you speak is what type of trait?
A
physical
B
chromosomal
C
environmental
D
inherited
12) Segments of DNA are called
A
genes
B
bases
C
alleles
D
traits
13) What does heterozygous mean?
A
allele
B
same
C
different
D
DNA
14) What does phenotype mean?
A
genetic combination
B
allele pairs
C
physical feature
D
homozygous
15) What tool is used to determine the probability of offspring genotypes and phenotypes?
A
microscope
B
hammer
C
punnett square
D
ladder
16) What type of letter represents a dominant allele?
A
A, T, C, or G
B
lower case
C
upper case
D
any type of letter
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, gg
C
gg
D
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
traits
C
genotypes
D
mutations
*select an answer for all questions
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