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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