Browse "Biology"

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Genetic Diseases

Genetic diseases result from chromosome abnormalities or mutant genes showing a specific pattern of inheritance. In addition, genetic factors are involved in susceptibility to some nongenetic DISEASES.

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Genetic Engineering

Interspecies gene transfer occurs naturally; interspecies hybrids produced by sexual means can lead to new species with genetic components of both pre-existing species. Interspecies hybridization played an important role in the development of domesticated plants.

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Entomology

Entomology is the branch of zoology dealing with the study of insects, although which organisms are included is open to interpretation.

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Evolution

Modern understanding of evolution began in 1859 with publication of Charles Darwin's On the Origin of Species by Means of Natural Selection.

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Farm Silo

Farm silos are storage structures for silages and high-moisture grains used for livestock feeds. Silos are a common fixture in livestock and mixed-farming operations across Canada.

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Genetically Modified Foods

GM plants were first marketed in the 1990s. The first commercialized GM crop was a TOMATO called Flavr Savr (resistant to rotting), marketed in 1994 by a US-based company, Calgene. Since then, many GM crops have been commercialized.

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Forest Survey

Foresters use forest surveys to obtain information on the condition of the FOREST and monitor any changes, since there are not only surveys of standing trees, but also surveys after logging as well as forestry surveys aimed at prescribing treatments.

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Population Genetics

Population genetics is the area of genetics that studies the distribution of genes (the units of genetic inheritance) and genotypes (the genetic complement at one or more loci), and the mechanisms determining genetic variability within a population.

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Genetics

Genetics may be conveniently divided into 3 areas of study: transmission genetics, molecular genetics and population genetics.

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Human Genome Project

GoalsAlthough the formal goal is to describe the sequence of nucleotides in the total length of DNA in the nucleus of a human cell, genes themselves are in fact very sparsely scattered within the DNA strand.

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Morning Glory

The morning glory family, containing 1200 species of herbaceous plants, is represented in Canada by cultivated common morning glory and 3 related species; 11 species of climbing, parasitic dodders; and 5 species of bindweed.

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Herbarium

A herbarium (Lat herba, "herb," formerly any medicinal plant) is a collection of dried specimens of plants mounted on sheets of heavy paper and stored in cabinets or bound in book form, as well as the building that houses such a collection.

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Insect Pests

Insects and humans cohabit the Earth and have developed complex relationships. Insect pests (less than 1% of all species) are those insects that feed on, compete for food with, or transmit diseases to humans and livestock.