In examining M. rattus, you realize that the animal has many eyecolors. You perform the following crosses.Cross         Parents                                            Progeny (ratio of phenotypes)1                blue eye X yelloweye                     all green2                blue eye X blueeye                         3 blue : 1 red3                blue eye X browneye                     1 blue : 1 green : 1 yellow: 1 […]

1. Pattern recognition receptors (PRR) include: A. Lectin-like molecules. B. Lipoteichoic acid. C. LPS. D. PAMPs. E. Unmethylated CpG sequences. 2. The mononuclear phagocyte system does not include: A. Endothelial cells. B. Kidney mesangial cells. C. Kupffer cells. D. Lymph node medullary macrophages. E. Monocytes. 3. A polymorphonuclear neutrophil (PMN): […]

1. The units of inheritance areA) twins.B) genes-C) heredities.D) metabolic activities.E) evolutions. 2. Which of the following includes other levels of hierarchy?A) kingdomB) domainC) familyD) phylumE) order 3. The first step in the scientific method is toA) propose a solution.B) draw a conclusion.C) perform an experiment.D) predict the results of […]

The decline of biodiversity at the hands of modern humans likely started even before the last Ice Ages. Recently some scientists have proposed a scenario called “Pleistocene re-wilding,” which offers an optimistic agenda for 21st-century conservation to bring back animals that disappeared from North America 13,000 years ago. What could […]