Intra- and interspecific cross combinations between the tetraploid treefrog Hyla versicolor, and between H. versicolor and the diploid treefrog Hyla chrysoscelis were performed. Progeny phenotypes resulting from these crosses were examined electrophoretically using a polymorphic glutamate oxaloacetic transaminase (GOT-1) locus, to determine the mechanism of chromosome segregation in H. versicol...

The granary weevil Sitophilus granarius L. is a pest causing substantial damage to stored wheat worldwide, against which the elaboration of sustainable control methods has recently been gaining importance. Our objective was assess efficacy rapid atmospheric convection heat transfer method S. under laboratory conditions. We examined changes in adult mortality and progeny survival triggered by ef...

The objective of this study was to investigate the effect genetic merit national Irish maternal index and genotype (i.e. beef vs. × dairy [BDX]) cows subsequent performance their progeny. With exception that high produced 0.57 kg more milk tended have 0.04 a lower body condition score (BCS), no significant differences were observed between diverse merit. Differences contrasting cow apparent. Be...

BACKGROUND Maternal effects on progeny traits are common and these can profoundly alter progeny life history. Maternal effects can be adaptive, representing attempts to appropriately match offspring phenotype to the expected environment and are often mediated via trade-offs between progeny number and quality. Here we have investigated the effect of maternal food availability on progeny life his...

Parental deoxyribonucleic acid (DNA) molecules of bacteriophage T4 recombine with their progeny in a way which disperses pieces of the parental molecule over large numbers of the progeny DNA molecules. The parental contribution per progeny phage, or DNA molecule, which receives parental label, is about 5 to 7% of the phage DNA molecule (A. W. Kozinski, Virology 13:124, 1961). The fragment is in...

Neutral evolution assumes that there are no selective forces distinguishing different variants in a population. Despite this striking assumption, many recent studies have sought to assess whether neutrality can provide a good description of different episodes of cultural change. One approach has been to test whether neutral predictions are consistent with observed progeny distributions, recordi...

Clinical manifestation of the disease caused by chicken anaemia virus (CAV) occurs when chicks are vertically contaminated or before second week life. CAV control is based on vaccination broiler breeders in order to promote progeny protection through maternal antibodies. This work aims evaluate, under field conditions, antibody title commercial at 28, 48, and 68 weeks age, rate transference pro...