Showing papers in "Journal of Genetics in 1971"
27 citations
19 citations
TL;DR: The mode of inheritance of serum cholesterol level and its relationship to body weight in white mice was considered and it was found that in male mice the serum cholesterol was highly heritable but not in female.
Abstract: The mode of inheritance of serum cholesterol level and its relationship to body weight in white mice was considered:
7 citations
TL;DR: Recurrent selection procedure for maximum exploitation of the prevalent gene actions was suggested for evolving high yielding cotton varieties.
Abstract: An 8 × 8 diallel cross analysis (eight parents plus their 28 nonreciprocal crosses) involving the diverse parents, L.S.S., 320F, H14, LL54, J34, A102, K2262, and SA594 was conducted for estimating the gene effects, through component analysis and graphic analysis, for six yield characters viz. yield per plant, number of bolls, boll weight, number of loculi, number of monopodia and number of sympodia in upland cotton (Gossypium hirsutum). Additive and dominance genetic variances were both found to be significant for the different characters. The graphic analysis indicates presence of epistatic gene effects for all the characters except number of sympodia. Recurrent selection procedure for maximum exploitation of the prevalent gene actions was suggested for evolving high yielding cotton varieties.
5 citations
4 citations
TL;DR: The findings of a genetic study carried out in Swiss Albino mice on body weight are presented, which shows that the hereditary difl'erenee~s in growth were more clearly expressed after than before weaning.
Abstract: Body weight in animals is an important quanti tat iw: character for making genetic invesligations. I t has the added adwtntage that it can be measured in both sexes, unlike a character like milk yield or egg production which is seen in only one sex. In mice, MaeArthm\" (194.9), l,'alconer (1953) anti Cartoon and Golley (1964) have demonstrated tile genetic basis of body weight at birth. Reports of Mael)~well et al. (1930), [~'~l.[e()llei\" ([ 947), Butlel' il.nd N,[etrakos (1950), Eaton (1953), Baten-~an (1954) and Cartoon and Golley (1964) showed that body weights o[\" snckling mice was conditioned by the availability of mothers ' milk. Venge (1950) in rabbits noted both tile matel'lla[ and genetic effects of litter mates oil birth weights. CaNnon ancl Golley (1964) in mice and Smith and Donalcl (1939) in pigs showed that the hereditary difl'erenee~s in growth were more clearly expressed after than before weaning. In tile present paper ave rel~Ol'tecl the findings of a genetic study carried out in Swiss Albino mice on body weight.
2 citations
TL;DR: The fact that the ovary from an untreated female when implanted in the abdomen of an infecund female develops more or less normally, at least in a qualitative sense, following a blood meal indicates that the yolk proteins and the gonadotrophic hormone are available for ovarian development in chemically treated females.
Abstract: 1.
Two-day old larvae ofAedes aegypti were reared until pupation in 25 ppm of a commonly used mosquito chemosterilant, apholate. This concentration induced complete female infecundity.
2.
Transplantation experiments involving ovaries from normal adults and adults arising from the above chemical treatment were undertaken. The object was to investigate whether apholate-induced female infecundity results from direct effects on the ovary or from indirect effects on the hormonal and/or yolk protein synthesis or supply.
3.
The fact that the ovary from an untreated female when implanted in the abdomen of an infecund female develops more or less normally, at least in a qualitative sense, following a blood meal indicates that the yolk proteins and the gonadotrophic hormone are available for ovarian development in chemically treated females. Thus, the humoral factors are not involved in female infecundity and the primary site of action of apholate must be the oocyte. The inhibition of the ovaries in apholate-treated females, must be brought about by degenerative changes in the ovary itself.
4.
Quantitatively, fewer untreated follicles developed following implantation in the abdomen of a treated female. Furthermore, they did not reach the same stage of development as they did in untreated environment. Possible mechanisms for this retarded development are discussed.
2 citations
TL;DR: The genetic correlation between body length and width was fairly low but all other correlations were very high, Heritability estimates for body length, height, chest girth and birth weight were 0.06, 0.23 and 0.20, respectively.
Abstract: Data on body length, chest girth, height and weight at birth of 404 Marwari lambs from 19 different sire-families were analysed. There was a significant phenotypic correlation between any two characters. All the environmental correlations except the one between body length and chest girth were smaller than the corresponding phenotypic correlations. The genetic correlation between body length and width was fairly low but all other correlations were very high, Heritability estimates for body length, height, chest girth and birth weight were 0.06, 0.42, 0.23 and 0.20, respectively.
TL;DR: The statistical treatment of data on inbreeding is discussed with special reference to recent Indian data, which shows clear trends in the number of cases of inbreeding in the population.
Abstract: The statistical treatment of data on inbreeding is discussed with special reference to recent Indian data.