Marginal Homozygosity for Gene Arrangement in Drosophila robusta.
نویسنده
چکیده
Marginal Homozygosity for Gene Arrangement in Drosophila robusta: H. L. Carson ..................................................... 630 Influence of White Blood Cells on Lysis of Red Cells by Cobra Venom: J. C. Turner . .................................................... 631 Nonspecificity of ATP-Contraction of Living Muscle: G. Falk .. 632 High Incidence Blood Group Found in Venezuelan Indians: M. Layrisse and T. Arends ........... ............................ 633 Spiral Male Nuclei in Ragweed Pollen: A. Yuasa ...... ................. 633 Genus Haemagogus in the United States: H. Trapido and P. Galindo. 634 Loss of Sebaceous Glands in Skin of Thiamine-Deficient Mice: T. S. Argyris 634 Congenital Galactosemia, a Single Enzymatic Block in Galactose Metabolism: K. J. Isselbacher et al . ............................... 635
منابع مشابه
Relative fitness of genetically open and closed experimental populations of Drosophila robusta.
HEN a genetically variable gene pool faces a new environmental challenge, Wmicroevolutionary change may be expected to occur. To understand this change, it would be ideal to know the details of the structure and integration of the gene pool both before and after the change. Although such conditions can hardly be met in any study of natural populations, an approach, at least, can be made in labo...
متن کاملPatterns of gene variation in central and marginal populations of Drosophila robusta.
The central and marginal populations of D. robusta differ greatly in the level of inversion polymorphism; the marginal populations are monomorphic or nearly so and the central populations are highly polymorphic. This paper presents the frequencies of alleles at forty gene loci in various populations of D. robusta, studied by electrophoresis of proteins and enzymes. Population samples were obtai...
متن کاملStudies of Linkage in Populations. IX. the Effect of Altitude on X-Chromosomal Arrangement Combinations in DROSOPHILA ROBUSTA.
Data are presented concerning the gene arrangements in both arms of the X-chromosome of Drosophila robusta in eight altitudinal transects. The major change appears to be the increase of gene arrangement XL-1 (and decrease in XL, sometimes also XL-2) with increasing altitude. In each transect only one combination of XL-1 with a right arm arrangement seems primarily responsible for the increases ...
متن کاملAssociation of alleles of the malic dehydrogenase locus with a pericentric inversion in Drosophila robusta.
Associations of Malic dehydrogenase alleles with the third chromosome arrangement 3R and the pericentric arrangement 3L-R are described. Even though significant associations between alleles and inversions exist within a population, there is an overall similarity in MDH allele frequencies in different populations inspite of large differences in inversion frequencies.
متن کاملAssociations of alleles of the esterase-1 locus with gene arrangements of the left arm of the second chromosome in Drosophila robusta.
Evidence of strong associations of Est-1 alleles with the 2L, 2L1 and 2L3 gene arrangements of the left arm of the second chromosome in D. robusta is presented. Each gene arrangement is polymorphic for three to four Est-1 alleles. The allele frequencies differ in the 2L3 and 2L arrangements; the allele Est-1(.92) is 8% in the 2L3 arrangement (n=203)-this allele is 82% in the 2L arrangement (n=2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Science
دوره 123 3198 شماره
صفحات -
تاریخ انتشار 1956