Unlike phytoplankton, which are at the mercy of currents, zooplankton can move at will within a current
Indicate whether the statement is true or false
FALSE
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Why does hair color vary among humans?
A. environment B. genetics C. both D. neither
How do pancake tortoises protect themselves from predators?
a. Their coloration serves as a disguise. b. They emit an undesirable scent. c. They have large jaws with teeth. d. They puff themselves up and become wedged in between cracks in rocks. e. They retreat into their shell.
The normal functions of Spo11 and Cas9 enzymes are different because
A) Spo11 produces double-strand breaks during meiosis, whereas Cas9 functions during mitosis. B) Spo11 produces site-specific double-strand breaks during meiosis, whereas Cas9 breaks DNA at random genomic locations. C) Spo11 produces double-strand breaks in many genomic locations during meiosis, whereas Cas9 is targeted to specific sequences by a CRISPR RNA. D) Spo11 produces double-strand breaks at sequences targeted by RNAs expressed during meiosis, whereas Cas9 has the ability to recognize DNA sequences without an RNA. E) Spo11 is unique to yeast, whereas Cas9 occurs in most higher eukaryotes.
Based on what we know about the version of the EPAS1 gene that most Tibetans possess, what can we likely infer about the ancient Denisovan hominins?
A. They had light skin B. They had dark skin C. They lived at low altitudes, likely close to sea level D. They lived at high altitudes