However, as noted in Results, we encountered significant difficulty in breeding these animals and noted a high degree of lethality early in the process.
As mentioned in point 2 above, the Gata3fl/fl-Vav-Cre mice are currently unavailable from our collaborators for further analysis due to difficulty in breeding.
Besides the previous lack of suitable markers, another major reason why there are no genome maps for the Order Crocodylia is the difficulty in breeding informative predigrees from which DNA resources can be developed.
One scientist called the new variety, "fabulous," especially in light of the difficulties inherent in breeding any new potato strain.
But only 19 survived, highlighting the difficulties in successfully breeding polar bears under human management.
We have also experienced great difficulties in the breeding.
Conventional backcross breeding has difficulty in confirming the several resistance genes combined in breeding lines using phenotypic selection with Xoo inoculation (Rajpurohit et al.2011; Shanti et al.2010; Sundaram et al.2008).2008
STUD Adventures in Breeding.
Swans are sociable except in breeding season.
Many with ornamental plumes in breeding season.
