Two patterns from large-scale DNA sequence data have been put forward as evidence that speciation between humans and chimpanzees was complex, involving hybridization and strong selection. First, divergence between humans and chimpanzees varies considerably across the autosomes. Second, divergence between humans and chimpanzees (but not gorillas) is markedly lower on the X chromosome. Here, we d...

Recently an aboriginal guide was showing a group of tourists around Alberta's renowned HeadSmashed-In Buffalo-Jump, a UNESCO World Heritage Site staffed by First Nations personnel. The guide graphically described how in ancient times the Jill Sullivan buffalo would be driven over the edge of a fifteen meter precipice, to land in a gory heap at the base of the cliff. A diorama showed men and wom...

A radiation-sensitive fibroblast culture (180BR) established from an acute lymphoblastic leukemia patient who died following radiotherapy is defective in the repair of radiation-induced DNA double-strand breaks. The cells also show a reduced capacity to repair interphase chromosome damage visualized by means of premature chromosome condensation and metaphase chromosome aberrations measured by f...

Lice are small, wingless, minor ectoparasites of mammals and birds. More than 540  blood-sucking lice (Phthiraptera: Anoplura) have been described with each host having its own type of louse, suggesting the cospeciation of the lice species with their host. Among these, two lice species from two different genera infest humans: Pediculus humanus and Phthirus pubis (pubic “crab” l...

Human chromosome 1 has been claimed to be a conserved ancestral chromosome of eutherian mammals. However, two small regions from distal 1q (with orthology to mouse chromosome 11) appear to have a different history. These two regions are proposed to have been added to the ancestor of human chromosome 1 as a single block that was subsequently disrupted by a paracentric inversion. The translocatio...

The factors that lead to errors in chromosome segregation during the production of egg cells in humans are becoming clearer.

The plant Ranunculus acris (L.) is widespread. It used in folk medicine. use of herbal medicines can have adverse effects on humans and requires studies raw materials for genotoxicity. goals the study were to examine toxic genotoxic aqueous solutions R. flowers at concentrations 0.625%, 1.25%, 2.5%, 5% 10% using Allium test determine numbers flavonoids polyphenols antioxidant activity extracts....

Rhetoric about spirituality and the human search for spiritual answers has been part of history for many years, and spiritual care has been part of nursing history since ancient times (Narayanasamy 1999c). Humans have a profound need to understand their spirits (Freeman 1998), which is the core of human existence and the most elusive and mysterious constituent of our human nature (Macquarrie 19...