Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a nicotine stimulus.

Any process that results in a change in the behavior of an organism as a result of a nicotine stimulus.

The progressive compaction of the spermatid chromatin so that it reaches a level of condensation that is not compatible with nuclear activities such as transcription or DNA replication.

A multimeric protein complex that can methylate lysine-27 and lysine-9 residues of histone H3. In Drosophila the core subunits of the complex include ESC, E(Z), CAF1 (NURF-55) and SU(Z)12. In mammals the core subunits of the complex include EED, EZH2, SUZ12 and RBBP4.

The directed movement of a hemocyte within the embryo. Hemocytes are blood cells associated with a hemocoel (the cavity containing most of the major organs of the arthropod body) which are involved in defense and clotting of hemolymph, but not involved in transport of oxygen. In Drosophila, embryonic hemocytes originate from the head mesoderm as a cluster of cells. The cluster splits into two and one group of cells crosses the amnioserosa. Both populations then spread toward the middle of the embryo and then disperse evenly throughout the embryo.

The stage-specific programmed cell death of cells of the larval midgut, during histolysis of the larval organ.

Catalysis of the reaction: S-adenosyl-L-methionine + methaneselenol => S-adenosyl-L-homocysteine + dimethyl selenide.

Catalysis of the reaction: S-adenosyl-L-methionine + hydrogen selenide => S-adenosyl-L-homocysteine + methaneselenol.

Catalysis of the reaction: S-adenosyl-L-methionine + dimethyl selenide => S-adenosyl-L-homocysteine + trimethylselenonium.

Catalysis of the reaction: ATP + H2SeO4 => diphosphate + adenylylselenate.

Catalysis of the reaction: ATP + adenylylselenate => ADP + 3'-phosphoadenylylselenate.

Catalysis of the reaction: ATP + L-selenomethionine + tRNA(Met) => AMP + diphosphate + selenomethionyl-tRNA(Met).

Catalysis of the reaction: tRNASec + L-Ser + ATP = Ser-tRNASec + AMP + diphosphate.

The developmental process in which the stucture of the notochord is destroyed in an embryo.

The directed migration of individual cells and small groups of cells toward the dorsal midline during gastrulation. This process does not require cell rearrangement.

The interdigitation of cells along the mediolateral axis during gastrulation.

OBSOLETE. Chromatin that is part of an active sex chromosome.