Answer:
Genes are segments of deoxyribonucleic acid (DNA) that code for a specific protein that works in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are found in the cell nucleus.
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At the West African Institute for Trypanosomiasis Research Field Station at Ugbobigha was 21·5 per cent.; this species is believed to be of major economic importance because its presence must prevent the keeping of cattle in large areas of potential grazing.
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Trypanosomiasis, both of humans and of livestock, is one of the most important factors restricting economic development in Africa today. The present paper outlines how this disease is limiting agricultural, veterinary and forestry development in the Sudan, Bechuanaland and West Africa.
The present tsetse-fly distribution is reviewed. Glossina palpalis and G. morsitans occur in the south Sudan and G. morsitans in the Ngamiland district of Bechuanaland; G. morsitans, G. palpalis and G. tachinoides are the most important species in West Africa.
These tsetse flies have altered the cattle distribution in all three regions and, in addition to causing widespread disease, have created local overstocking problems in the tsetse-free grazing areas, and have enforced nomadism on breeding herds and economic loss in slaughter cattle along the trade cattle routes in West Africa.
Human trypanosomiasis is not now such an urgent problem and public health measures have led to its control in all three areas.
Increased agricultural development, which can be a successful and economic method of reclaiming land from tsetse flies, must be intensified in all three areas.
Forest conservation policy comes into conflict with tsetse control measures only in West Africa.
Detailed tsetse-fly surveys and research, on which future plans can be firmly based, are now urgently required.
<h2>X-Ray diffraction</h2>
Explanation:
- x-ray diffraction and the macroscopic shape of crystals.
- X-ray diffraction is a nondestructive method generally utilized for the portrayal of smaller scale crystalline materials. The strategy has been generally applied for stage distinguishing proof, quantitative investigation and the assurance of structural flaws. Lately, applications have been stretched out to new territories, for example, the assurance of reasonably complex gem structures and the extraction of three-dimensional microstructural properties. This is the outcome of the higher goals of current diffractometers, the coming of high-power X-ray sources and the advancement of line-profile displaying ways to deal with conquer the line cover issue emerging from the one-dimensional information contained in a powder diffraction design.
Answer:
They suggested that the two continents where they were found could have been joined.
Explanation:
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Diffusion-process of spreading culture traints from one society to another...in other words the spreading of something more widely
