Abstract Ear length is an important component of maize grain yield. However, the ear a complex quantitative trait, and underlying molecular mechanisms remain poorly understood. Here, chromosome segment substitution line (CSSL) 1283 displayed longer compared with recipient parent Xu178. An RNA sequencing analysis Xu178 CSSL1283 ears during three undifferentiated developmental stages identified 1...

We present a genome assembly from an individual male Euproctis similis (the yellow-tail; Arthropoda; Insecta; Lepidoptera; Lymantriidae). The sequence is 508 megabases in span. Over 99% of the scaffolded into 22 chromosomal pseudomolecules, with Z sex chromosome assembled. complete mitochondrial genome, 15.5 kb length, was also assembled.

The 32 telomeres in the budding yeast genome cluster in three to seven perinuclear foci. Although individual telomeres and telomeric foci are in constant motion, preferential juxtaposition of some telomeres has been scored. To examine the principles that guide such long-range interactions, we differentially tagged pairs of chromosome ends and developed an automated three-dimensional measuring t...

Anaphase chromosome motion involves the disassembly of kinetochore microtubules. We wished to determine the site of kinetochore microtubule disassembly during anaphase in crane-fly spermatocytes. In crane-fly spermatocyte spindles, monoclonal antibody 6-11B-1 to acetylated alpha-tubulin labels kinetochore microtubules almost exclusively, with an area immediately adjacent to the kinetochore bein...

A consideration of the data presented in an earlier paper (GRAUBARD 1932) brings out certain facts with regard to the mechanism of crossing over in chromosome I1 of Drosophila melanogaster which may have general significance. In the previous work experiments were performed to study crossing over and interference along the entire length of the normal chromosome I1 and of the same chromosome with...

Understanding genome and chromosome evolution is important for understanding genetic inheritance and evolution. Universal events comprising DNA replication, transcription, repair, mobile genetic element transposition, chromosome rearrangements, mitosis, and meiosis underlie inheritance and variation of living organisms. Although the genome of a species as a whole is important, chromosomes are t...

We have developed from crosses of oat (Avena sativa L.) and maize (Zea mays L.) 50 fertile lines that are disomic additions of individual maize chromosomes 1-9 and chromosome 10 as a short-arm telosome. The whole chromosome 10 addition is available only in haploid oat background. Most of the maize chromosome disomic addition lines have regular transmission; however, chromosome 5 showed diminish...

Unlike ribonucleoprotein complexes that have a highly ordered overall architecture, such as the ribosome, yeast telomerase appears to be much more loosely constrained. Here, we investigate the importance of positioning of the Ku subunit within the 1157-nt yeast telomerase RNA (TLC1). Deletion of the 48-nt Ku-binding hairpin in TLC1 RNA (tlc1Δ48) reduces telomere length, survival of cells with g...

Il Yong KIM* Olivier DE WECK Dept. of Mechanical and Materials Engineering, Queen’s University, Canada Dept. of Aeronautics and Astronautics and Engineering Systems Division, MIT, USA Abstract This article introduces the concept of variable chromosome lengths in the context of an adaptive genetic algorithm (GA). This concept is applied to structural topology optimization with large numbers of d...