These strains do not ordinarily mate with each other, and their hybrid offspring tend to show abnormal growth.
The impressive Gordon galloped forward and picked out his team-mate with a great cross that was firmly headed past Esson.
Why mate with a second-class beau who cannot be bothered to bring you the fishy equivalent of roses and diamonds?
ECONOMIST: Males can take many routes to reproductive success
The need for a screw with threads shaped to mate with the substance it is penetrating has always been out there.
Those that survive then mate with other resistant rats, allowing a generation of rats resistant to existing poisons to build up.
Females who can produce but a limited number of offspring regardless of how many mates they have want to mate with the best available male.
On the Republican side, McCain kept his headline-grabbing running mate with him on the trail as he campaigned in Lee's Summit, Missouri.
"I have been a team-mate with Lewis before so that wouldn't be a problem, " said the Williams driver, who partnered the Briton in go-karts as a teenager.
The result is that males often compete with each other sometimes violently for access to females, but females then decide which males they wish to mate with.
He does not contribute as many assists as Young either, so even though he is more experienced than his team-mate with 23 caps, Young has more form.
Kenny Miller intercepted a slack pass and picked out his team-mate with an excellent whipped delivery from the right only for Boyd to head over from eight yards.
In a third experiment involving only women, those who saw a photo slide show on the recession rated more highly the importance of finding a mate with sound finances.
WSJ: When Sex Reigns Online, and Looking Good in Bad Times | Week in Ideas
The sterile flies (raised in special laboratories in Guatemala and rendered sterile with gamma rays) are expected to mate with females which, of course, will be unable to reproduce.
The high incidence of promiscuity among females coupled with the fact that they increase their risk of predation, parasites and disease to mate with multiple males suggests that there must be a benefit to the behaviour.
And, since eggs are more costly to make than sperm, the number of her descendants is limited by the number of eggs she can grow, while a male's posterity depends more on the number of females he can mate with.
But in my world, a wise person, or a person of ordinary judgment will not become deeply emotionally attached to a person until you actually see your soul mate with your own eyes, and not be so trusting of a video or electronic transmission.
Because flashy, dominant males tend to mate with disproportionately more females than dull, unassuming ones it makes sense to focus on bringing the best sons to the peak of perfection with a hormone injection that makes them look even flashier than their genes alone would allow.
Severin could be joined at Rugby Park by another former team-mate, with 21-year-old Maguire poised to join on loan from Aberdeen.
One of the city's poorest and most violent regions, the former archbishop often entered on foot to celebrate mass in small chapels and drink mate tea with locals.
The top 10 was completed by Brawn's Rubens Barrichello, who himself has designs on finishing runner-up to his team-mate, with Williams' Nico Rosberg ninth and Kimi Raikkonen in his Ferrari 10th.
Time to mate nuclear warheads with Iran's growing arsenal of longer and longer range ballistic and cruise missiles.
Flintoff dismissed his former Lancs team-mate Crawley, with the batsman edging the all-rounder to Stuart Law at slip for 11.
Then, when you mate two trees with different desirable properties, it is simple to check which offspring contain them all by looking for the genetic markers.
ECONOMIST: Genetic engineering: Gone is the forest primeval | The
Team-mate Massa agreed with Alonso's sentiments about the race.
The male displays to attract a female mate by strutting with his tails spread and head held low, while making a rhythmic bubbling call that is interspersed with a sound like a sneeze.
The rate at which an epidemic spreads to lower-risk groups depends a great deal on whether different groups mate mainly among themselves (assortative mating) or whether they mate a lot with other people (disassortative mating).
The other reason a career can hurt a marriage will be obvious to anyone who has seen his or her mate run off with a co-worker: When your spouse works outside the home, chances increase that he or she will meet someone more likable than you.
The six points claimed by Hamilton also took McLaren into first place in the constructors' championship with Massa's Ferrari team-mate Kimi Raikkonen carelessly colliding with the wall while in fifth place.
The Spaniard left McLaren at the end of last year, having fallen out with rookie team-mate Lewis Hamilton during his first season with the British-based outfit.
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