MC Final Exam 2022 with complete solution, Exam
(elaborations)
Which method allowed scientists to determine which gene contributes the most to
submergence tolerance in rice? - Quantitative trait locus mapping
Model o
...
MC Final Exam 2022 with complete solution, Exam
(elaborations)
Which method allowed scientists to determine which gene contributes the most to
submergence tolerance in rice? - Quantitative trait locus mapping
Model organisms have which characteristic that makes them suitable for research? - a
short generation time
How do scientists engineer genetically modified organisms? - transform genes from one
species into the genome of another
Which scenario would most likely influence which genetic variants occur in a
population? - an outbreak of a deadly virus
Suppose you have a special strain of Neurospora that makes citrulline but not arginine.
Which gene(s) are likely mutant or missing in your special strain? - Gene C
Mendel studied a tall variety of pea plants with stems that are 20 cm long and a dwarf
variety with stems that are only 12 cm long.
a) Under blending theory, how long would you expect the stems of first-generation
hybrids to be?
b) Under blending theory, how long would you expect the stems of second-generation
hybrids to be? - a) 16 cm
b) 16 cm
Mendel studied a tall variety of pea plants with stems that are 20 cm long and a dwarf
variety with stems that are only 12 cm long.
Under Mendelian rules and assuming stem length is controlled by a single gene, what
would you expect to observe in the second-generation hybrids if all the first-generation
hybrids were tall? - Tall is dominant, with an expected 3:1 ratio of tall:dwarf in the
second generation.
Mendel's experiments involving the crossing of purple and white plants best
demonstrated which concept? - The blend theory of inheritance did not accurately
explain how all genes behave in offspring
Which is the correct order of synthesis during transcription and translation? -
DNA→RNA→ Protein
Which genetic tool can be used to study gene expression under specific conditions? -
DNA microarrayWhy does red-green blindness occur more frequently than blue-yellow blindness in
women? - The red and green genes are more likely to be disrupted due to unequal
crossing over.
You have a second strain of Neurospora that makes neither citrulline nor arginine but
does make ornithine. Which gene(s) are mutant or missing in this strain? - Gene B
Which discovery was the first to suggest that genes are made of DNA? - Avery,
Macleod, and McCarty demonstrated that the bacterial cells can be transformed by
foreign DNA.
Select the law of inheritance that best describes the ability to predict phenotypic ratios
from parents of known genotypes. - the law of equal segregation
Describe a heterozygous null mutation that does not produce enough functional protein.
- haploinsufficient and dominant
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