Geralmente, um agonista atua como imitador de hormonas e liga-se ao mesmo recetor utilizado por essa hormona. O processo pelo qual ocorre morte celular programada denomina-se apoptose. Uma vez ativada, a segunda caspase pode decompor outras caspases ativando-as ou outros ligandos. O ciclo do estro divide-se em 4 fases distintas: proestro, estro, metestro e diestro — cada uma caracterizada por fisiologia distinta bem como por distinta morfologia e comportamento animal.

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Cultivated banana, Musa spp. These correspond to the genetic constitutions of wild Eumusa species M. Most cultivated clones are triploid or diploid, they have been classified into genomic groups according to chromosome numbers and morphological traits.

Genomic in situ hybridization GISH enabled us to differentiate the chromosomes of these four genomes; however, a distal portion of the chromosomes remained unlabelled. GISH was used to determine the exact genome structure of interspecific cultivated clones. In most cases the results were consistent with the chromosome constitution estimated by means of phenotypic descriptors.

The one notable exception, the clone 'Pelipita', has the 8 A and 25 B chromosomes instead of the predicted 11 A and 22 B. GISH also enabled us to determine the chromosome complement of a few clones that could not be classified only on the basis of phenotypic descriptors and chromosome counts.

The rDNA sites were located in Musa species. They appeared to be often associated with satellites, which can be separated from the chromosomes, representing a potential source of error for chromosome counting using classical techniques.

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By using this website, you consent to the processing of data about you by Google in the manner and for the purposes set out above. Le Cirad en chiffres agents, dont chercheurs. CIRAD is a French research centre working with developing countries to tackle international agricultural and development issues. Mandate CIRAD works with the whole range of developing countries to generate and pass on new knowledge, support agricultural development and fuel the debate on the main global issues concerning agriculture.

CIRAD is a targeted research organization, and bases its operations on development needs, from field to laboratory and from a local to a global scale. Activities CIRAD's activities involve the life sciences, social sciences and engineering sciences, applied to agriculture, food and rural territories.

CIRAD works hand-in-hand with local people and the local environment, on complex, ever-changing issues: food security, ecological intensification, emerging diseases, the future of agriculture in developing countries, etc. It primarily works through joint research platforms 14 worldwide and seven in the French overseas regions. Partnerships CIRAD has a global network of partners and of twelve regional offices, from which it conducts joint operations with more than 90 countries.

Its bilateral partnerships fit in with multilateral operations of regional interest. In metropolitan France, it provides the national and global scientific communities with extensive research and training facilities, primarily in Montpellier. Joint operations with more than 90 countries. Twelve regional offices in metropolitan France, the French overseas regions and other countries. Around thirty collective research tools accessible to partners from developing countries.

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Cytogenetic Analysis Related to Some Infertility Problems in Cattle

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