Genes for self-incompatibility usually inhibit:a
the production of pollen grains.
b. pollination.
c. the growth of the pollen tube.
d. the growth of the style.
e. microspore formation.
c
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How does the organization of the bacterial genome differ from the organization of the eukaryotic genome?
A. The compaction of the eukaryotic genome involves structural maintenance of chromosome (SMC) proteins, and the compaction of the bacterial genome does not. B. Most bacterial chromosomes are circular and the eukaryotic chromosomes contained in the nucleus are not. C. Bacterial chromosomes are made up of RNA and eukaryotic chromosomes are made up of DNA. D. The eukaryotic genome is found on chromosomes and there are no chromosomes in bacterial cells. E. Eukaryotic chromosomes have to be tightly packed to fit into the nucleus, and bacterial chromosomes do not require tight packing to fit into the cell.
An individual who shelters an infectious agent long after recover is called a(n) _____ carrier.
a. incubation b. chronic c. passive d. asymptomatic e. convalescent
Stem cells are located in _____ and give rise to ____.
Fill in the blank(s) with the appropriate word(s).
The ultimate source of energy for most life on Earth is:
A) oxygen. B) the sun. C) the metabolic processes found in all living things. D) heat from the Earth.