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BLAST (biotechnology) In bioinformatics, BLAST (basic local alignment search tool) [3] is an algorithm and program for comparing primary biological sequence information, such as the amino-acid sequences of proteins or the nucleotides of DNA and/or RNA sequences.
A thick layer that lacks cell boundaries and grows into the endometrial stroma. It secretes hCG in order to maintain progesterone secretion and sustain a pregnancy. Intermediate trophoblast (IT) The implantation site, chorion, villi (dependent on subtype) An anchor placenta (implantation site IT).
Generative biology is the generative science that explores the dynamics guiding the development and evolution of a biological morphological form. [1] [2] [3] Developmental processes Cell differentiation Cell differentiation is the process whereby different functional cell types arise in development. For example, neurons, muscle fibers and ...
Category. v. t. e. Darwin's finches. Evolutionary biology is the subfield of biology that studies the evolutionary processes (natural selection, common descent, speciation) that produced the diversity of life on Earth. It is also defined as the study of the history of life forms on Earth.
Developmental systems theory (DST) is an overarching theoretical perspective on biological development, heredity, and evolution. [1] It emphasizes the shared contributions of genes, environment, and epigenetic factors on developmental processes. DST, unlike conventional scientific theories, is not directly used to help make predictions for ...
Evolutionary developmental biology. Homologous hox genes in such different animals as insects and vertebrates control embryonic development and hence the form of adult bodies. These genes have been highly conserved through hundreds of millions of years of evolution. Evolutionary developmental biology (informally, evo-devo) is a field of ...
Anatomical terminology. [edit on Wikidata] The bilaminar embryonic disc, bilaminar blastoderm or embryonic disc is the distinct two-layered structure of cells formed in an embryo. In the development of the human embryo this takes place by day eight. It is formed when the inner cell mass, also known as the embryoblast, forms a bilaminar disc of ...
von Baer's laws (embryology) Embryology theories of Ernst Haeckel (following Meckel) and Karl Ernst von Baer compared. Von Baer denied any recapitulation of whole adult forms, though individual structures might be recapitulated. In developmental biology, von Baer's laws of embryology (or laws of development) are four rules proposed by Karl ...