Gene Pool Journal
A large
gene pool indicates extensive genetic diversity, which is related to robust populations which will survive bouts of intense selection. Meanwhile, low
genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction, although as explained by genetic drift new genetic variants, that will cause a rise within the fitness of organisms, are more likely to repair within the population if it's rather small.
When all individuals in a very population are identical with respect to a selected phenotypic trait, the population is claimed to be 'monomorphic'. When the individuals show several variants of a specific trait they're said to be polymorphic.
Primary
gene pool (GP-1): Members of this
gene pool are probably within the same "species" (in conventional biological usage) and might intermate freely. Harlan and de Wet wrote, "Among kinds of this
gene pool, crossing is easy; hybrids are generally fertile with good
chromosome pairing;
gene segregation is approximately normal and
gene transfer is usually easy.". They also advised subdividing each crop
gene pool in two:
Subspecies A: Cultivated races
Subspecies B: Spontaneous races (wild or weedy)
Secondary
gene pool (GP-2): Members of this pool are probably normally classified as different
species than the crop
species into consideration (the primary
gene pool). However, these
species are closely related and may cross and produce a minimum of some fertile hybrids. As would be expected by members of various species, there are some reproductive barriers between members of the first and secondary
gene pools:
High Impact List of Articles
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Mammography of breast calcifications
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Review Article: Imaging in Medicine
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MRI of the prostate: potential role of robots
Jurgen J Futterer, Sarthak Misra and Katarzyna J Macura
Perspective: Imaging in Medicine
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MRI of the prostate: potential role of robots
Jurgen J Futterer, Sarthak Misra and Katarzyna J Macura
Perspective: Imaging in Medicine
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Nina Ghosh, Ronnen Maze, Benjamin Chow, Carole Dennie, Alexander Dick and Terrence Ruddy
Review Article: Imaging in Medicine
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Noninvasive cardiovascular imaging in coronary artery disease
Nina Ghosh, Ronnen Maze, Benjamin Chow, Carole Dennie, Alexander Dick and Terrence Ruddy
Review Article: Imaging in Medicine
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Prachi P Agarwal, Ella A Kazerooni
Editorial: Imaging in Medicine
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Imaging swine flu: is it ever necessary?
Prachi P Agarwal, Ella A Kazerooni
Editorial: Imaging in Medicine
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Hiroyuki Irie, Junich Nojiri, Noriyuki Kamochi, Yoshiaki Egashira, Masashi Nishihara, Masanobu Mizuguchi
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Review Article: Imaging in Medicine
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Imaging autoimmune pancreatitis
Hiroyuki Irie, Junich Nojiri, Noriyuki Kamochi, Yoshiaki Egashira, Masashi Nishihara, Masanobu Mizuguchi
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