In the evolutionary sense, what is meant by the term molecular clock?
What will be an ideal response?
Molecular clocks are amino acid or nucleic acid sequences in which evolutionary changes accumulate over time. Ideally, such changes accumulate at a constant rate, so that the degree of differentiation is correlated to the length of time of divergence.
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Candidate genes for the inherited components of mood disorders affect
A) muscle and nerve cell function. B) connective tissue function. C) signal transduction and neurotransmission. D) cellular adhesion and blood clotting.
Penguins are preyed on by:
a. leopard seals and killer whales. b. narwhales. c. sperm whales. d. jaegers. e. frigate birds.
Group B Streptococcus infections can cause serious infections in infants through vertical transmission.
Answer the following statement true (T) or false (F)
Oligosaccharides include
a. sucrose. b. glucose. c. fructose. d. lactose e. both sucrose and lactose.