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tag speciation drosophila

Sperm sparring spotted
Jef Akst | Mar 17, 2010 | 3 min read
Scientists have developed a powerful new way to study sperm competition: Watch the action -- live. The seminal receptacle (SR) and onespermatheca of a female D. melanogasterinitially mated to GFP-sperm malethen remated to RFP-sperm male.Image: © Science/AAASUsing fluorescent tagging technology, the researchers have bought themselves a front row seat to the fight, allowing them to decipher the strategies males use to ensure their sperm (and not another male's) reach the egg, already helping
The Hidden Side of Sex
Patricia L.R. Brennan | Jul 1, 2014 | 10+ min read
Sexual selection doesn’t end when females choose a mate. Females and males of many animal species employ an array of tactics to stack the deck in their reproductive favor.

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