Search results for:  gene
 

Number of matches:  8

gene A chromosomal unit carrying information which can be inherited.

gene bank A facility existing for the ex situ conservation of seeds, tissues, or reproductive cells.

genetic diversity Variability in the genetic makeup of individuals within or among species; the hereditary variation within and among populations.

genetic dominance The influence exerted by a dominant gene or allele, like wrinkled seeds being dominant over smooth.

genetic drift Random changes in isolated populations, or in the frequencies of certain genes, which cannot be accredited to selection, mutation, or migration. See also: natural selection.

alternation of generations The complete life cycle of plants with very different sexual and asexual phases, such as the succession of haploid gametophytes and diploid sporophytes found in ferns, Pteridophyta.

filial generation In hybrid offspring, the first cross is designated as F1; the second cross as F2, etc.

genus (pl. genera) A group of closely related species. The taxonomic category ranking above a species and below a family.

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Notes:

• This is version: 2.1     Last updated: February 4, 2002.

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