Strand slippage results in ________, which can cause a number of human diseases such as fragile X syndrome
A) tautomeric shift
B) double-stranded DNA breaks
C) pyrimidine dimer addition
D) deletion of large sections of DNA
E) the re-replication of highly repetitive DNA sequences
Answer: E
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The morphology of plants is determined
A. by cell division at the tip of the shoots and cell elongation at the tip of the roots. B. by cell division at the tip of the roots and cell elongation at the tip of the shoots. C. by cell elongation at both the tip of the shoots and the roots. D. by cell death (apoptosis) along the radial axis. E. by cell division at both the tip of the shoots and the roots.
This hormone is secreted from the posterior pituitary and regulates muscle contraction.
A. antidiuretic hormone B. prolactin C. adrenocorticotropic hormone D. oxytocin E. epinephrine
In a __________, water or some nutrient moves from an environmental reservoir, through organisms, then back to the
environment. Fill in the blank(s) with the appropriate word(s).
Deforestation increases the productivity of land
Indicate whether the statement is true or false