Sex-linked inheritance of a cuticular pigmentation marker in the marine isopod, Paracerceis sculpta Holmes (Crustacea: Isopoda: Sphaeromatidae)

Article Abstract:

It has been possible to establish a sex bias in the expression of a cuticular pigmentation marker in population samples of Paracerceis sculpta, a Gulf of California isopod, collected over 10 years. The inheritance of this marker has been detailed in three generations of isopods reared in a laboratory. It has been established that sex determination in this isopod involves female heterogamety, with the distinctive stripe pattern being W-linked, where ZW = females and ZZ = males. Existing evidence of chromosomal sex determination and female heterogamety in this species has been confirmed.

Animal genetics

---

Genetic diversity in natural populations of wild soybean in Iwate prefecture, Japan

Article Abstract:

A study was done on the genetic diversity of four populations of wild soybeans using gel electrophoresis. It was shown that genetic diversity among the soybean species was carried primarily by different homozygotes because of self-pollination. Thirty eight point one percent of the 42 loci examined from 15 enzymes and one non-enzyme protein showed polymorphism. Between-population diversity was 0.074 while within-population diversity was calculated at 0.302.

Soybean, Soybeans

---

A sex-linked enzyme polymorphism in the marine isopod Jaera ischiosetosa

Article Abstract:

Marine isopods Jaera albifrons, J. ischiosetosa and J. praehirsuta were studied for genetic variation at the Gpi enzyme locus. The variation among the Gpi enzyme locus of the different marine isopods was attributed to the separation of the three alleles at an autosomal locus. The Gpi locus on J. ischisetosa was explained by the presence of a sex-linked polymorphism where both sex chromosomes carry the Gpi locus.

Similar abstracts:

• Abstracts: Biodiversity of a Burkholderia cepacia population isolated from the maize rhizosphere at different plant growth stages
• Abstracts: Inheritance of nuclear DNA markers in gynogenetic haploid pink salmon. Kinship analysis of pacific salmon: Insights into mating, homing, and timing of reproduction
• Abstracts: The influence of local DNA sequence and DNA repair background on the mutational specificity of 1-nitroso-8-nitropyrene in Escherichia coli: inferences for mutagenic mechanisms
• Abstracts: Inheritance of pseudostem waxiness in banana and plantain (Musa spp.). Cytology of 2n pollen formation in a blueberry aneuploid (2n = 4x + 9 = 57)
• Abstracts: The effects of population bottlenecks on multilocus DNA variation in robins. Sex-specific restriction fragments and sex ratios revealed by DNA fingerprinting in the brown skua

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.