All Articles Tagged As: reproduction
 | Scientists at EMBL and the MRC discovered that if a specific gene located on a non-sex chromosome is turned off, cells in the ovaries of adult female mice turn into cells typically found in testes. Their study, published in Cell, challenges the long-held assumption that the development of female traits is a default pathway and grants a valuable insight into how sex determination evolved. ...> Full Article |
 | During meiosis the pairing, recombination and segregation of half the chromosomes to egg and sperm the cytoskeleton plays a key role. Abby Dernburg and UC Berkeley colleagues have found that the cytoskeleton facilitates movement of the chromosomes in search of a partner and, once the chromosomes come together, check whether the chromosomes are homologous. If yes, it then allows formation of a zipper-like synptonemal complex between the two. ...> Full Article |
Cornell researchers have discovered a genetic mechanism in fruit flies that prevents two closely related species from reproducing, a finding that offers clues to how species evolve.
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 | A genetic search using patients and mouse models has uncovered an unlikely gene critically involved in Dandy-Walker malformation, a common birth defect which causes mental retardation, motor delays and sometimes autism. This newly discovered function of the gene, which is never expressed in the brain, reveals a previously unknown role of the skull in directing brain development. ...> Full Article |
Results have implications for in vitro fertilisation and embryonic stem cell research
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An emerging form of the pathogenic yeast Candida is able to complete a full sexual cycle in a test tube, even though it's missing the genes for reproduction. And it may also do so while infecting us, according to Duke University Medical Center researchers.
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Two genes clarify the genetic control of female sexual maturation, and point to regulatory mechanisms involved in human growth and development
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 | University of Nevada School of Medicine researcher leads important discovery ...> Full Article |
 | A newly discovered genetic abnormality that appears to prevent some men from conceiving children could be the key for developing a male contraceptive, according to University of Iowa researchers reporting their findings in the April 2 online edition of the American Journal of Human Genetics. ...> Full Article |
Certain bacteria have learned to manipulate the proportion of females and males in insect populations. Now Uppsala University researchers have mapped the entire genome of a bacterium that infects a close relative of the fruit fly. The findings reveal extremely high frequencies of gene exchange within this group of bacteria. In the future sex-manipulating bacteria may be used as environmentally friendly pesticides against harmful insects.
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 | Declines in reproductive success due to inbreeding are probably due to a few key genes that influence other genes, said University of Illinois animal biology professor and department head Ken Paige, who led the study. ...> Full Article |
 | Absence of ERK2 Gene linked to birth defects ...> Full Article |
 | Researchers have identified a key protein that suppresses jumping genes in mouse sperm and found that the protein is vital to sperm formation. ...> Full Article |
Male fruit flies missing a gene for one particular odor receptor become clueless in matters of love
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Researchers collaborate with European scientists to unlock mysteries of Lrh1 gene
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Homosexual behaviour is largely shaped by genetics and random environmental factors, according to findings from the world's largest study of twins.
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Aging leads to large changes in gene activity in the ovaries of mice, but only limited changes in testes
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 | Apparent ease of DNA incorporation may reveal a bizarre new form of sexual reproduction ...> Full Article |
Different modes of reproduction leave 'signatures' in an organism's DNA sequence
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Research could lead to improved pregnancy rates and fewer multiple pregnancies
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Clues into how preeclampsia may surface in some pregnancies
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Healthy men who report lower levels of the nutrient folate in their diets have higher rates of chromosomal abnormalities in their sperm
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 | The rearing of steelhead trout in hatcheries causes a dramatic and unexpectedly fast drop in their ability to reproduce in the wild, a new Oregon State University study shows, and raises serious questions about the wisdom of historic hatchery practices. ...> Full Article |
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