The process of natural selection results in Select all that apply.
_____ Extinction.
_____ Random genetic mutations.
_____ Adaptation.
_____ Speciation.
__X__ Extinction.
_____ Random genetic mutations.
__X__ Adaptation.
__X__ Speciation.
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Nitrogen has a higher electronegativity than hydrogen. As a result you would expect that ammonia (NH3) molecules can form ____ with each other
A. ionic bonds B. hydrophilic bonds C. hydrogen bonds D. cohesive bonds E. covalent bonds
In the digestive system, some protease enzymes must be secreted as an inactive form and then activated later by proteolytic cleavage once outside of the secreting cell to prevent active proteases from damaging the secreting cells. What is the category of precursor proteins of this type?
A) ubiquitins B) zymogens C) glycosides D) activins
In ____, fertilized eggs from a rare species may be implanted in a related and less rare species
a. host mothering b. captive breeding c. artificial insemination d. commercial harvesting e. sperm banking
A polyploid organism contains ____ set(s) of chromosomes.
A. no B. one C. two D. multiple