Molecular Genetics Quiz
Preview:
What mutation has occurred here?
T-G-A-C-C-A
T-G-A-G-C-A
A. Substitution
B. Deletion
C. Insertion
D. Frameshift
Since most amino acids are encoded for by more than one codon, the genetic code is said to be …
A. semi-conservative
B. a triplet code
C. universal
D. redundant
STRUCTURE: What Nitrogenous Base does RNA contain that DNA does not?
A. Thymine
B. Uracil
C. Adenine
D. Love
A DNA molecule made from 2 different sources is called …
A. recombinant DNA
B. nuclear DNA
C. modified DNA
D. mutant DNA
Which of the following information or processes does gene therapy require?
A. the ability to introduce the normal allele into the patient
B. the knowledge and availability of the defective gene but not the normal allele
C. the ability to express the introduced gene at any time in the tissue site within the patient
D. the ability to introduce a defective allele into a patient
The process of using an mRNA to make a protein is called
A. Replication
B. Transcription
C. Translation
D. Cell Division
A small circular piece of DNA found in bacteria are called …
A. recombinants
B. vectors
C. plasmids
D. prokaryotes
STRUCTURE: Nucleotides monomers are made up of a sugar, a phosphate, and a:
A. nitrogenous base
B. nucleic acid
C. cholesterol
D. fatty acid
A mutation leading to an early ‘stop’ codon is a …
A. frameshift mutation
B. silent mutation
C. missense mutation
D. nonsense mutation
Adenine bonds with ______________.
A. Guanine
B. Thymine
C. Cytosine
D. Adenine
A type of substitution in which no amino acids change is called
A. Missense
B. Nonsense
C. Silent
D. Deletion
Liver cells differ from skin cells mainly because they…
A. have unique ribosomes.
B. use different genetic codes.
C. contain different genes.
D. express different genes.
Humans have 23 pairs of chromosomes, and chimps have 24 pairs of chromosomes. What is the most likely explanation for these differences in human and chimp genomes?
A. At some point in evolution, human and chimp ancestors reproduced with each other.
B. In the evolution of chimps, new adaptations resulted from additional chromosomal material.
C. The common ancestor of humans and chimps had 24 pairs of chromosomes. During human evolution, two human chromosomes fused end to end.
D. Errors in mitosis resulted in an additional pair of chromosomes in chimps.
How many amino acids could be coded using the sequence 5’AUGCCCGUA3′
A. 1
B. 2
C. 3
D. 4
STRUCTURE: Which 2 molecules form the sides of the DNA ladder?
A. deoxyribose and adenine
B. deoxyribose and a hydrogen bond
C. sugar and the nucleus
D. deoxyribose (sugar) and phosphate