LIFESCI 7C UPDATED SCRIPT 2026
PRACTICE SOLUTIONS GRADED A+
● If they have children, these patients can pass all of the new tumor
mutations on to their offspring. Answer: False. Only the DNA in
gametes is transferred to offspring.
● Suppose two patients have inherited mutated copies of BRCA1 and
have developed breast cancer. You collect tumor samples from each
patient and look at the mutations. These tumors will have mostly the
same mutations. Answer: False. BRACA1 results in mutations in ovarian
and breast cancers.
● The new data added below shows the source of mutations for each
kind of tumor. What is the most prominent source of mutations in
glioblastoma tumors? Answer: CpG deamination. This can be
determined after using the color-coded graph.
● Compare the results for thyroid tumors and glioblastoma tumors.
Which tumors vary more in mutation number? Answer: Glioblastoma
has a wider distribution than thyroid tumors. The deviates are spread
farther apart.
● Compare the results for thyroid tumors and glioblastoma tumors.
Which tumors have more mutations on average? Answer: Glioblastoma.
PRACTICE SOLUTIONS GRADED A+
● If they have children, these patients can pass all of the new tumor
mutations on to their offspring. Answer: False. Only the DNA in
gametes is transferred to offspring.
● Suppose two patients have inherited mutated copies of BRCA1 and
have developed breast cancer. You collect tumor samples from each
patient and look at the mutations. These tumors will have mostly the
same mutations. Answer: False. BRACA1 results in mutations in ovarian
and breast cancers.
● The new data added below shows the source of mutations for each
kind of tumor. What is the most prominent source of mutations in
glioblastoma tumors? Answer: CpG deamination. This can be
determined after using the color-coded graph.
● Compare the results for thyroid tumors and glioblastoma tumors.
Which tumors vary more in mutation number? Answer: Glioblastoma
has a wider distribution than thyroid tumors. The deviates are spread
farther apart.
● Compare the results for thyroid tumors and glioblastoma tumors.
Which tumors have more mutations on average? Answer: Glioblastoma.
