The components of semen and sperm ensure that the sperm itself will survive, have the necessary DNA to fertilize the female's egg and be able to survive the journey from the sperm's starting point (the testicles) to the end point (inside the female's reproductive organs to fertilize the e...
The components of semen and sperm ensure that the sperm itself will survive, have the necessary DNA to fertilize the female's egg and be able to survive the journey from the sperm's starting point (the testicles) to the end point (inside the female's reproductive organs to fertilize the e...
Female round gobies were placed in the middle of a four-way maze that received either of these steroids released by reproductive males: 1) 3α-hydroxy-5β-androstane-11,17-dione-3-sulfate (11-O-ETIO-3-S), previously shown to be synthesized by the testes, to be present in the urine ...
Given the importance of the sex pheromone for the reproductive success of the medfly, several studies over the years have been directed both to characterizing the chemical composition of this pheromone and to identifying its biologically active compounds (Alfaro et al., 2011, Baker et al., 1985...
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Stem cell maintenance requires expression of genes essential for stemness and repression of differentiation genes. How this is achieved remains incompletely understood. Here we investigate the requirement for central components of heterochromatin, Heterochromatin Protein 1 (HP1) and the histone H3 lys9 ...
WARNING: Welding wires may expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. This warning is posted because of the legal requirements of the State of California. For more information, please visit ...
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biguttulus and C. mollis. In addition, our results suggest that ongoing gene flow between this species pair is unlikely and that sexual selection plays an important role in the maintenance of species isolation. 展开 关键词: Chorthippus Reproductive isolation Speciation Hybridization DOI: 10.1007/s...
WARNING: The wire and metal parts of this product can expose you to lead, a chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. This warning is posted because of the legal requirements of the State of California. For more informat...