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