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