The key specializations that occurred in the evolution of mammals include all of the following except
A. reduction in brain size.
B. warm-bloodedness.
C. digestive tract specialization.
D. the presence of a placenta in most.
E. different teeth suited to their diet.
Answer: A
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How would you design an sRNA to bind to a sequence?
A) select six continuous nucleotides from the sequence B) take the complementary sequence of six continuous nucleotides C) select 200 continuous nucleotides from the sequence D) take the complementary sequence of 200 continuous nucleotides
An unrooted tree containing four unrelated species can become rooted by adding
A. a descendant group related to two of the species. B. an unrelated outgroup. C. a descendant related to only one of the species. D. a distantly related outgroup.
The enzyme that HIV uses to copy its RNA into DNA is
A. RNA integrase. B. transcriptase. C. reverse transcriptase. D. DNA polymerase. E. RNA polymerase.
Cells that will eventually undergo meiosis and produce gametes are often referred to as ________ cells.
Fill in the blank(s) with the appropriate word(s).