Sentences with word «copulatory»

He notes that without seminal fluid, male mice can't secrete the proteins to form the usual copulatory plug.

Males can mount and achieve a natural copulatory tie.

«We assume that there may be differences in copulatory organs, in reproductive behaviour or pheromones, or in choosing specific habitats.

Scientists have long speculated that these «female copulatory calls» aren't just a pointless quirk — they might have an evolutionary function.

Female copulatory orgasm and male partner's attractiveness to his partner and other women.

Martin Wikelski, a zoologist at the University of Washington, has found that these abused males have evolved a unique reproductive strategy: at the sight of a female, they freeze in copulatory poses and ejaculate.

An article recently appearing in the Journal of Personality and Individual Differences4 explored the prevalence of copulatory orgasms among partnered women.

The conjugal act, profoundly unitive, isa procreative kind of act, and the gift of the child is to be profoundly linked to the spouses» incarnate gift of self in that conjugal, not merely copulatory, act.

The tiny male blanket octopus, which possesses a relatively huge copulatory organ, spends it entire life drifting on the ocean in search of a female so large he is no bigger than one of her eyes.

On finding it, the male inserts copulatory structures called spicules and mating commences.

In some taxa, males have elaborate copulatory displays to woo females.

«This hard outer shell gets transferred behind the bolus of sperm and acts as a copulatory plug that prevents the female from being able to mate again with other males — hopefully insuring his sperm as the cocktail that fertilizes the female's eggs when she lays them.»

Some spiders have what's called a copulatory dialogue before sex, where the females make a sound like squeaking leather.

He says that the proteins that form the copulatory plug might be one signal to the female reproductive tract that gets lost when there is no seminal fluid.

This affords males a foothold to deposit a copulatory plug full of sperm, as well as proteins that make females unreceptive to further copulation for a few hours.

Molecular basis of the copulatory plug polymorphism in Caenorhabditis elegans.

Penetration of a male copulatory organ into a suitable mate is a conserved and necessary behavioral step for most terrestrial matings; however, the detailed molecular and cellular mechanisms for this

In the blackness of space, the pilots of the Pan Am spaceship dock (or penetrate with) the phallic craft - through the aid of graphic read - out screens that must constantly be monitored - in the spoke - hub of the gigantic, circular, revolving space station [a symbol of an egg]- almost like a copulatory act.

During the copulatory tie, both the male dog and the female dog may have their own reasons to move away and cease the coitus.

Generally, dog breeders will put the best effort into planning the copulatory tie.