The primer for retrovirus reverse transcription is a specific
A) tRNA encoded by the cell.
B) tRNA encoded by the virus.
C) nuclear tRNA.
D) nuclear tDNA.
Answer: A
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If a single stranded RNA virus contains genomic RNA that is identical to the mRNA that it produces, what type of virus is this categorized as?
A. Minus Strand B. Negative Strand C. Plus Strand D. Plus Strand or Positive Strand is acceptable. E. Positive Strand
A woman heterozygous for color blindness (an
X-linked recessive allele) marries a man with normal color vision. What is the probability that their first child will be color blind? a. 25% b. 50% c. 75% d. 100% e. none of these
Tetraploid organisms have four copies of each chromosome instead of the two copies that humans have. How many copies of each chromosome end up in a gamete produced by a tetraploid organism?
A) 1 B) 2 C) 3 D) 4
Branching points at the root of the eukaryotic phylogenetic tree
A) reveal that unikonts are derived from the SAR clade B) suggest that Archaeplastids were the first eukaryotes C) strongly suggest that fungi are more closely related to plants than animals D) are presently unclear