Sentence examples for are only fertile from inspiring English sources

In her book, Sweetening the Pill, and in numerous articles, Holly Grigg-Spall points out that men have no fertility cycle, while women are only fertile for six days every month.

That has particular significance for pandas: the females are only fertile for at most four days a year, and only ready to mate for less than two of those days.

The competition is intense, as females are only fertile for one day.

Within that period they are only fertile for about 24 hours.

As the eggs in a female canine are only fertile during the estrus phase of the estrous cycle, the eggs could only be harvested during a three-week period each year.

Most women are only fertile for a few days out of every menstrual cycle.

MYTH: You can't get pregnant if you have sex during your period Many women think that they're only fertile for a few days each month, and so they believe they can't get pregnant during their period and throughout most of their menstrual cycle.

The fertile islands are only slightly above sea level and are protected from the sea by a system of flood dikes.

The Human Genome Project, the World Wide Web, and the boundaries of the infinitely small are only a few of the fertile fields where new research is flourishing.

Compared with WT anthers, anthers from OsSTA208 RNAi plants were relatively white, their pollens were only 5-85-8%rtile (Table  1).

By contrast, the C. elegans male is only cross-fertile, and requires an adult hermaphrodite mating partner to reproduce.