Evolutionary biologists suspect that genetic imprinting evolved through parent-offspring conflict. What kinds of "conflict of interest" in progeny development can you imagine between mammalian parents?
What will be an ideal response?
Fetal development requires enormous energy investment, and in many species the degree of pre- and postnatal investment directly influences future maternal reproduction. From the point of view of the mother's evolutionary fitness, there should be a balance between present and future investment. In terms of the father's evolutionary fitness, however, his unborn offspring should take as much energy from the mother as possible to safeguard his present investment, since his future investments may not necessarily be with the same mother. Imprinting may have evolved as a result of conflict between the maternal and paternal genomes. (See Reik and Walter. 2001. Nat Genet. 27:255-256; PMID 11242103.)
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A. inductive reasoning B. deductive reasoning C. a theory D. an experiment
If a person has six fingers, her genotype is _____
a. ff b. Ff c. FF d. Ff or FF
What name is given to the open ocean?
A) pelagic realm B) intertidal zone C) benthic realm D) photic zone
Joan wants to discover a microbe capable of degrading an environmental contaminant. Which of the following culturing methods would be most effective for isolation of such an organism?
A) cell culture B) chemostat C) quorum sensing D) enrichment culture E) differential culture