Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Joseph P. Hegmann"'
Publikováno v:
British Journal of Ophthalmology. 59:380-384
The genetic analyses of indices relating to distance alignment and accommodative convergence are presented. This approach is important in understanding the contribution of genetic factors to observed individual differences for these measures. Abnorma
Publikováno v:
The American Naturalist. 111:1047-1059
Female Oncopeltus fasciatus in long-day photoperiods lay eggs 15-20 days after their adult molt. Individual bugs transferred to short-day photoperiods extend age at first reproduction to about 80 days, but populations maintained in that same short-da
Publikováno v:
Journal of Experimental Zoology. 218:195-202
Some stages of the molting cycle are not readily discernible in large crustaceans, if classical staging methods are employed. Alternative methods were explored. A statistical classification procedure used in numerical taxonomy, multiple discriminant
Publikováno v:
American Journal of Ophthalmology. 88:502-505
In a quantitative genetic investigation of seven clinical tests, five pairs were significantly correlated: (1) cover test measures and corneal power, (2) corneal power and divergence recovery points, (3) convergence and divergence recovery points, (4
Publikováno v:
Physiology & Behavior. 29:97-105
Increases in nesting during pregnancy may be mediated by progesterone in mice. If the behaviors, maternal nesting (MN) and nesting induced by exogenous progesterone (PN), are controlled by the same physiological mechanism, it would be expected that t
Autor:
Joseph P. Hegmann, Bernard Possidente
Publikováno v:
Behavior Genetics. 11:103-114
Genetic correlations measure the extent of pleiotropic effects of polygenes on pairs of characters or the closeness of linkage between sets of loci influencing the traits and held in allelic (gametic) disequilibrium. Their importance for research lie
Autor:
Joseph P. Hegmann, Astrid B. Boening
Publikováno v:
Behavioral Biology. 17:555-560
Lines of mice selected for high and low caudal nerve conduction velocity at 45 days of age remain divergent at 70 and 120 days although conduction velocity by all animals increases substantially during this time. Lines selected for high velocity show
Publikováno v:
Journal of Experimental Zoology. 221:323-327
Thirty-six measured variables were compared in crabs de-eye-stalked (DE) for 24 hours to 45 days and with normal animals well advanced in the premolt stage of the molting cycle. DE crabs generally differed from premolts in water and ion composition o
Autor:
Joseph P. Hegmann, Bernard Possidente
Publikováno v:
Journal of Comparative Physiology ? B. 139:121-125
Circadian rhythms for food and water consumption were measured in five inbred strains of mice under a photoperiod of 16 h light and 8 h dark (16:8 LD), and under constant light (LL).