Levels of genetic diversity

This study was therefore designed to evaluate the physical and physiochemical quality characteristics of inbred varieties with diverse origins and released in different periods in North Vietnam to determine the level of genetic divergence through cluster analysis.

10p vibecca 01-10-2024 1 1   Download

Genetic diversity among 28 sesame (Sesamum indicum L.) varieties was examined at DNA level by means of random amplified polymorphic DNA (RAPD) analysis. Fifteen primers used produced a total of 132 RAPD fragments. Each primer generated 3 to 26 amplified fragments with an average of 8.8 bands per primer. Based on pair-wise comparisons of RAPD amplification products, Nei and Li’s similarity coefficients were computed to assess the associations among the varieties. Pair-wise similarity indices varied from 0.35 to 0.84.

8p cothumenhmong7 09-09-2020 19 2   Download

Cycads occur in lowland forests and are threatened by their degradation, fragmentation and over-exploitation. Our results indicate that cycad population sizes were very small (less 100 individuals) with high propagules. These increased mating between closely related individuals growing in clumps. The allozyme data show although all studied cycads maintained high levels of genetic diversity, an average of 0.556 (0.491 in C. hoabinhensis to 0.598 in C. chevalieri ), the degree of inbreeding was high.

10p 12120609 01-06-2020 16 3   Download

Functional diversity of potassium channels in both prokaryotic and euk-aryotic cells suggests multiple levels of regulation. Posttranslational regula-tion includes differential subunit assembly of homologous pore-forming subunits. In addition, a variety of modulatory subunits may interact with the pore complex either statically or dynamically. Kv2.1 is a delayed recti-fier potassium channel isolated by expression cloning.

13p fptmusic 11-04-2013 36 2   Download