So unlike in humans ordsprog

So, unlike in humans, every chimp male's sperm has to fight really hard to fertilize a single egg.

Jennifer Hughes

If female bats mate with more than one male, a sperm competition begins. The male who ejaculates the greatest number of sperm wins the game, and hence many bats have evolved outrageously big testes.

Mannens uppgift är att producera sperma. Nu har vi spermabanker.

The male function is to produce sperm. We now have sperm banks.

Valerie Solanas (1936-1988)

It's only a mature sperm that can fertilize an egg and eventually produce a baby. Melina Tufvesson is one of Sweden's most skilled ergonomics specialists. It's only a mature sperm that can fertilize an egg and eventually produce a baby.

Vinay Tergaonkar

[Some of this comes down to a simple biological difference between men and women.] Every time a man has sex, he makes enough sperm to fertilize every woman in Europe, ... Y: The Descent of Men.

When we use fresh sperm, the surgical procedures for the sperm retrieval and egg retrieval need to be done the same day, and this may not be convenient for the couple. However, if we use frozen sperm, the man can have his procedure first, and if we find sperm, we can bank it. Then, at the couple's convenience we do egg retrieval and the fertilization procedure that puts the egg and sperm together. The model helps us know in advance when frozen sperm would allow for good results for that couple.

[In an interview on CNN's] Late Edition, ... can examine it under a microscope and see sperm. And the key issue is whether there is sperm there.

If female bats mate with more than one male, a sperm competition begins. Males want to make sure their genes make it to the next generation. And evolution is all about tradeoffs.

Ultimately worms have the same issues as we do for getting their sperm and egg together, and hopefully that will be useful for improving our understanding of human infertility, giving us different insights into reproductive strategies that nature uses to get the sperm and egg together.

Royal Mail will fight hard for every single letter.

There are some studies that indicate that they cause reproductive effects in animals and there is at least one study that suggests there could also be an effect in male humans.

It's a huge honor, and I feel like it's a major achievement to have this accomplishment in this fraternal order that has been predominantly male. It's hard for a woman to break into something that is male-dominated.

Katherine Martin

It was not that a single performance lifted us. It was a hard fight and we played good cricket. But we can't slip up as there is still a lot left in the series.

Human trafficking is a multibillion-dollar growth industry because, unlike drugs, which are gone as soon as they are used, humans can be recycled. Because they can continue to be exploited, they're a better investment for the traffickers.

[Antonio Tarver presented a formidable challenge. He was born in Orlando to a single-parent mother who raised him and three daughters on her own.] She and my father never lived together, ... He was a Vietnam vet. It's hard to say he was my father because he was never there. Biologically, he donated but that's about all. We never saw much of each other, just a phone call here and there, so I never had that male figure in my life. That was a void I had to live with.

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