BIOD 210 FINAL EXAM | UPDATED ACTUAL | COMPLETE
QUESTIONS AND CORRECT VERIFIED ANSWERS
• Which of the following statements is correct?
- The X chromosome is much larger than the Y chromosome.
- The X and Y chromosomes share no homology.
- The X chromosome is the driving determinant for sex of an offspring.
Incorrect segregation of X and Y chromosomes (for instance a female with XXX or
X genotype) is always embryonic lethal -✓✓ANSWER: The X chromosome is much
larger than the Y chromosome.
• The DNA in a ________ is packaged in the head, which is shaped like a capsule.
The _________ of the phage pushes the DNA through the host cell membrane
much like a syringe. -✓✓ANSWER: - phage
- sheath
• The only trisomy disorder in which individuals routinely live longer than one
year is _________.The incidence seems to increase with _____________. -
✓✓ANSWER: - Down syndrome (trisomy 21)
- maternal age
• TRUE/FALSE: Epigenetic therapy does not depend on changes in the DNA
sequence. -✓✓ANSWER: True
• In a few sentences, summarize Darwin's theory of natural selection -
✓✓ANSWER:
, • Consider genes A, B and C which are located on a chromosome in that order. If
genes A andB cross over 40% of the time, and genes B and C cross over 30% of the
time, what is the probability of a double crossover between A,B, and C?: -
✓✓ANSWER: (0.4)*(0.3)=0.12, 12% chance of this crossover.
• An enzyme that can be turned off by appropriate signals or conditions is called -
✓✓ANSWER: repressible
• The loss or gain of one chromosome, but not the set, is referred to as -
✓✓ANSWER: aneuploidy
• 2n-1 -✓✓ANSWER: monosomy
• 2n+1 -✓✓ANSWER: trisomy
• Explain how cancer cells control the extracellular matrix to drive the process of
metastasis. -✓✓ANSWER:
• Explain how cancer cells control the extracellular matrix to drive the process of
metastasis. Give an example of a protein we discussed that controls this in breast
cancer cells.: -✓✓ANSWER:
• Explain wobble hypothesis -✓✓ANSWER: flexible base pairing in the third
position of the codon. This degeneracy allows for multiple codons encoding for a
specific amino acid
• poly U's terminate on which end of RNA?: -✓✓ANSWER: 3'
QUESTIONS AND CORRECT VERIFIED ANSWERS
• Which of the following statements is correct?
- The X chromosome is much larger than the Y chromosome.
- The X and Y chromosomes share no homology.
- The X chromosome is the driving determinant for sex of an offspring.
Incorrect segregation of X and Y chromosomes (for instance a female with XXX or
X genotype) is always embryonic lethal -✓✓ANSWER: The X chromosome is much
larger than the Y chromosome.
• The DNA in a ________ is packaged in the head, which is shaped like a capsule.
The _________ of the phage pushes the DNA through the host cell membrane
much like a syringe. -✓✓ANSWER: - phage
- sheath
• The only trisomy disorder in which individuals routinely live longer than one
year is _________.The incidence seems to increase with _____________. -
✓✓ANSWER: - Down syndrome (trisomy 21)
- maternal age
• TRUE/FALSE: Epigenetic therapy does not depend on changes in the DNA
sequence. -✓✓ANSWER: True
• In a few sentences, summarize Darwin's theory of natural selection -
✓✓ANSWER:
, • Consider genes A, B and C which are located on a chromosome in that order. If
genes A andB cross over 40% of the time, and genes B and C cross over 30% of the
time, what is the probability of a double crossover between A,B, and C?: -
✓✓ANSWER: (0.4)*(0.3)=0.12, 12% chance of this crossover.
• An enzyme that can be turned off by appropriate signals or conditions is called -
✓✓ANSWER: repressible
• The loss or gain of one chromosome, but not the set, is referred to as -
✓✓ANSWER: aneuploidy
• 2n-1 -✓✓ANSWER: monosomy
• 2n+1 -✓✓ANSWER: trisomy
• Explain how cancer cells control the extracellular matrix to drive the process of
metastasis. -✓✓ANSWER:
• Explain how cancer cells control the extracellular matrix to drive the process of
metastasis. Give an example of a protein we discussed that controls this in breast
cancer cells.: -✓✓ANSWER:
• Explain wobble hypothesis -✓✓ANSWER: flexible base pairing in the third
position of the codon. This degeneracy allows for multiple codons encoding for a
specific amino acid
• poly U's terminate on which end of RNA?: -✓✓ANSWER: 3'
