Genetics Final Exam Questions and AnswersGenetics Final Exam Questions and AnswersGenetics Final Exam Questions and AnswersGenetics Final Exam Questions and AnswersGenetics Final Exam Questions and AnswersGenetics Final Exam Questions and AnswersThe loss of genetic diversity within a population inc...
, The loss of genetic diversity within a population increases its risk of extinction - ANSWER True
diffusion - ANSWER the process by which molecules move from an area of higher concentration to an
area of lower concentration
If a cell with a diploid number of 32 chromosomes (2n=32) undergoes meiosis how many chromosomes
are in each daughter cell? - ANSWER 16
A gene encodes a protein with the following amino acid sequence:
Met-Lys-Ser-Pro-Ala-Thr-Pro*
A base substitution mutation occurs in this gene, resulting in a protein with the amino acid sequence:
Met-Lys-Pro-Pro-Ala-Thr-Pro*
What type of base substitution mutation did most likely occur? - ANSWER missense
Frameshift mutations rarely change the function of the protein encoded by a gene, true or false -
ANSWER false
Correct statements about mutations - ANSWER -many spontaneous mutations are generated by DNA
replication errors
-induced mutations can occur from exposure to certain chemicals and radiation
-transitions are more frequent than transversion mutations
incorrect statement about mutations - ANSWER mutations only occur in exons
What is the name of a mutation that doesn't have an observable effect on the phenotype - ANSWER
silent
Frameshift mutations can be produced by - ANSWER insertions and deletions
Imagine a spontaneous depurination occurs in one of the nucleotides of the DNA molecule. Would that
already be considered a mutation? - ANSWER no
, Imagine species A has 2n = 14 chromosomes. What would be the chromosome number found in an
individual of this species that is autotriploid? - ANSWER 21
A triploid individual is 3n. A common mistake is to assume that 3n means three times as many
chromosomes as in a normal individual, but remember that normal individuals are 2n. Because n for
species A is 7 and all genomes of an autopolyploid are from the same species, 3n = 3 × 7 = 21
chromosomes.
The number of GMO crops currently present in food markets in the United States is: - ANSWER relatively
small (<20)
Which entity is not involved in regulating GMO crops in the US? - ANSWER US Department of Commerce
What entities are involved in regulating GMO crops in the US? - ANSWER -Environmental Protection
Agency
-US Department of Agriculture
-Food and Drug Adminstration
Promoters are crucial for controlling expression of transgenes in the plant. Among the different plant
promoters, constitutive promoters are often used. A constitutive promoter: - ANSWER activates gene
expression in all or most plant tissues throughout the life cycle
Considering the following transcript, which DNA strand could have been the DNA template for this RNA?
5′ AUGGCGUUU 3′ - ANSWER 3′ TACCGCAAA 5′
What is a codon? - ANSWER Three nucleotides that encode an amino acid
Base analogs are mutagenic because of which characteristic? - ANSWER They are structurally similar to
the normal bases
In principle, would it be possible to generate transgenic (GM) sugar or salt? - ANSWER no
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