Which of the following series of events is associated with the
formation of cancer?
a)The proto-oncogenes mutate and become oncogenes which are
continuously active. There is also an associated loss of tumor
suppressor gene activity allowing uncontrolled growth of cells.
b)The oncogenes mutate and become proto-oncogenes which are
continuously active. There is also an associated loss of tumor
suppressor gene activity allowing uncontrolled growth of cells.
c)The proto-oncogenes mutate and become oncogenes which stop
functioning altogether. There is also an associated increase in the
tumor suppressor gene activity allowing uncontrolled growth of
cells.
d)The oncogenes mutate and become proto-oncogenes which stop
functioning altogether. There is also an associated increase in the
tumor suppressor gene activity allowing uncontrolled growth of
cells.
Place the correct word into each sentence for more information
on the different types of mutations.
words: start, three, one, similar, stop, different
Point mutations include changes in ____________ base
of a segment of DNA.
A point mutation can result in no change or a
____________ protein being made.
Sometimes a point mutation can lead to an improper
____________ codon resulting in the production begin
stopped before the protein is completely made.
Place the correct word into each sentence to describe the
different types and causes of mutations.
words: mutation, ingestion, can, cannot, protein, inherited,
sex, gonad, exposured, body, spontaneous
A gene ____________ is a change in the sequence of bases of
DNA.
These changes in bases can affect ____________ production,
protein activity, or have no effect on protein production at
all.
Germline mutations are those that occur in ____________ cells
and ____________ be passed onto future generations.
Somatic mutations occur in ____________ cells of an
individual.
Some mutations are ____________ and happen for no apparent
reason.
Other mutations are called induced mutations and are the result
of ____________ to toxins or radiation.