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Chemistry, 30.09.2019 10:00 cyanezc1313
Every cell contains which contains the code of who you are and the instructions for life.
question 1 options:
dna
nucleotide
dnr
cytoplasm
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question 2 (3 points) question 2 saved
a segment of dna that determines a particular trait is called a
question 2 options:
helix
chromosome
gene
nucleotide
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question 3 (3 points) question 3 saved
how many pairs of chromosomes does a human have?
question 3 options:
52
46
23
24
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question 4 (3 points) question 4 unsaved
having a dimpled cheek is a dominant trait (d) and having a non-dimpled cheek is a recessive trait (d). if someone is homozygous dominant, then what genotype does the person carry?
question 4 options:
ddd
dd
dd
dd
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question 5 (3 points) question 5 saved
the physical trait that an organism expresses is called the
question 5 options:
heterozygote
homozygote
phenotype
genotype
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question 6 (3 points) question 6 unsaved
t is the allele that represents a thorned plant
t is the allele that represents a non-thorned plant
what is the genotype of a plant that is heterozygous for the thorned trait?
question 6 options:
tt
tt
ttt
tt
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question 7 (3 points) question 7 unsaved
r is the allele for red leaves
r is the allele for yellow leaves
if a plant has the genotype rr, what phenotype does the plant express?
question 7 options:
red
orange
gold
yellow
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question 8 (3 points) question 8 saved
what phase of mitosis is shown below where the chromosomes line up in the middle?
mitosis
question 8 options:
telophase
metaphase
prophase
anaphase
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question 9 (3 points) question 9 unsaved
mitosis is a means of a cell undergoing asexual reproduction to produce two new cells.
question 9 options:
true
false
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question 10 (3 points) question 10 unsaved
pairs of the same chromosome as found in a karyotype are called homologous chromosomes.
question 10 options:
true
false
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question 11 (3 points) question 11 unsaved
when dna tightly coils up, it forms a(an)
question 11 options:
karyotype
gene
chromosome
allele
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question 12 (3 points) question 12 unsaved
dna has a structure that resembles a twisted ladder. this structure is called
question 12 options:
double spiral
double helix
helical
double ladder
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