close inbreeding造句

• Close inbreeding increases the likelihood of recessive genes matching up.
• Animals have evolved numerous diverse mechanisms for avoiding close inbreeding and promoting outcrossing ( see Inbreeding avoidance ).
• Vertebrates have evolved numerous diverse mechanisms for avoiding close inbreeding and promoting outcrossing ( and see Inbreeding avoidance ).
• In general, many mammal species, including humanity's closest primate relatives, avoid close inbreeding possibly due to the deleterious effects.
• However, this disease effect would tend to be small unless there is a high degree of close inbreeding, or if the endogamous population becomes very small in size.
• Close inbreeding was observed at low frequencies in the Mediterranean Cory s shearwater ( " Calonectris diomedea diomedea " ) where two mother-son pairs were reported.
• Close inbreeding, called linebreeding, has only recently been recognised as problematic; generations of breeder manuals have recommended close inbreeding to produce a dog that is highly standardised in appearance.
• Close inbreeding, called linebreeding, has only recently been recognised as problematic; generations of breeder manuals have recommended close inbreeding to produce a dog that is highly standardised in appearance.
• RSPCA chief vet Evans welcomed the ban on close inbreeding but said that the breed standard changes were not " radical enough to really make a difference . " He also expressed concern about how standards would be interpreted in the show ring.
• Inbreeding avoidance has been studied by three major methods : ( 1 ) observing individual behavior in the presence and absence of close kin, ( 2 ) contrasting costs of avoidance with costs of tolerating close inbreeding, ( 3 ) comparing observed and random frequencies of close inbreeding.
• Inbreeding avoidance has been studied by three major methods : ( 1 ) observing individual behavior in the presence and absence of close kin, ( 2 ) contrasting costs of avoidance with costs of tolerating close inbreeding, ( 3 ) comparing observed and random frequencies of close inbreeding.
• On 12 January, the Kennel Club released the revised breed standards, which will " not include anything that could in any way be interpreted as encouraging features that might prevent a dog from breathing, walking and seeing freely . " " This will help to prevent the practice of exaggeration, where features that are perceived to be desirable, such as a short muzzle or loose skin, are made more prominent by breeders, and which can have detrimental effects on a dog s health . " Rules to ban close inbreeding ( parent / child and sibling / sibling ) would take effect 1 March 2009 . Show rules have been changed to state " more clearly than ever " that judges should only " reward those dogs that are healthy representatives of their breed . " Judges will also have the authority to eject unhealthy dogs from competitions.