Princeton University researchers have discovered that learned behaviors can be inherited for multiple generations in C. elegans, transmitted from parent to progeny via eggs and sperm cells. The paper detailing this finding, ...
Cell & Microbiology
Jun 6, 2019
0
518
Female fruit flies can feel when a sexual partner is a good fit. Scientists have long known that proteins in a male fly's ejaculate make female flies temporarily lose interest in other partners. It's a trick male flies use ...
Plants & Animals
May 6, 2019
0
114
A study by Ph.D. student Hanna Nyborg Støstad has investigated the peculiar spiral shape of songbird sperm. Støstad compared sperm cells of 36 bird species including house sparrows and tree swallows, and found that species ...
Plants & Animals
Apr 5, 2019
0
197
Pathological infertility is a condition affecting roughly 7 percent of human males, and among those afflicted, 10 to 15 percent are thought to have a genetic cause. However, pinpointing the precise genes responsible for the ...
Cell & Microbiology
Mar 26, 2019
0
23
As an organism grows and responds to its environment, genes in its cells are constantly turning on and off, with different patterns of gene expression in different cells. But can changes in gene expression be passed on from ...
Biotechnology
Mar 20, 2019
1
61
When potential DNA evidence—say, from a sexual assault case—is submitted to a forensic lab for analysis, the scientists are often faced with the time-consuming challenge of sorting out which DNA profile came from the ...
Analytical Chemistry
Feb 6, 2019
0
125
Waves of undulating cilia drive several processes essential to life. They clear debris and mucus from the respiratory tract, move spinal fluid through the brain and transport embryos from the ovaries to the uterus for implantation. ...
Cell & Microbiology
Jan 14, 2019
0
69
The steady production of sperm relies on the number of sperm stem cells in the testis remaining constant. Researchers including Assistant Professor Yu Kitadate and Professor Shosei Yoshida (developmental biologists at the ...
Cell & Microbiology
Dec 21, 2018
0
38
Plant biologists at the University of California, Davis have discovered a way to make crop plants replicate through seeds as clones. The discovery, long sought by plant breeders and geneticists, could make it easier to propagate ...
Biotechnology
Dec 12, 2018
2
139
In mammals, females have a limited supply of oocytes. Oocytes have a unique epigenome with approximately half the DNA methylation of sperm, and the most terminally differentiated somatic cells. Until recently, regulators ...
Biotechnology
Nov 29, 2018
0
55
