The Red Queen hypothesis may explain
a. why asexual reproduction is easier and faster
than sexual reproduction.
b. why aphids seasonally alternate parthenogenesis
with sexual reproduction.
c. the existence of all-female species of animals.
d. the connection between species interactions and
sexual reproduction.
e. why meiosis and fertilization alternate during
sexual reproduction.
Answer: d
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A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?
A. 0 B. 13 C. 26 D. 52
The sequencing method that cuts DNA segments into fragments, arranges those fragments based on overlapping nucleotide sequences, and then clones these fragments is called
A. shotgun sequencing. B. clone-by-clone sequencing. C. RFLP sequencing. D. consensus sequencing.
The average heart beats approximately _________ times per minute.
a. 50 b. 75 c. 100 d. 125
Which is false about Rapid Eye Movement (REM) sleep?
-It is the last sleep state in the adult's 90 minute sleep cycle -One's EEG shows brain activity similar to wakefulness -The amount of REM sleep that takes place in a 90 minute sleep cycle remains constant throughout the night (meaning that in each stage, 20% of sleep is REM) -Most dreaming activity is associated with this stage