During the M checkpoint, the cell ____
a. proceeds to interphase and completes DNA replication
b. proceeds to G2 phase and the cell prepares to divide
c. proceeds to S phase or enters inactive G0 state
d. monitors attachment of spindle fibers to chromosomes
e. monitors completion of DNA synthesis and DNA damage
d
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The molecular mechanism that produces genomic imprinting by inactivating an allele involves ____ of
DNA in the allele that will not be expressed.
a. methylation b. mutation c. ligation d. deletion e. inversion
Identify the species that is NOT classified as a pteridophyte.
A. Marchantia B. Psilotum C. Equisetum D. Hart's tongue
What is meant by the term helix-turn-helix (HTH)?
What will be an ideal response?
A major distinction between the connective tissues in an animal and other main tissue types such as epithelium, nervous tissue, or muscle is _______________
(a) the ability of connective-tissue cells such as fibroblasts to change shape. (b) the amount of extracellular matrix in connective tissues. (c) the ability of connective tissues to withstand mechanical stresses. (d) the numerous connections that connective-tissue cells make with each other.