South Mountain Park in Phoenix, AZ, is the largest city park in the US. Among other fancy things, it is notable for its population of Chuckwallas, with the highest density reported. Unique to this population is the male phenotype with orange tails. South Mountain can sometimes be viewed as an […]

How did Santiago Ramon y Cajal (1906) famous neuroanatomical drawings of the nervous system contribute to our current understanding of the cellular wiring of the nervous system? A. Distinguish the morphological difference between neurons and glia and list their respective classifications based on morphology or shape. B. Which glia are […]

Q1. The functional lac repressor is a homoteramer. Still, the X-ray structure of lac repressor bound to the lac operator sequence centered at +11 reveals that the two half sites that constitute the complete operator sequence with two-fold rotational symmetry are each bound by a monomeric subunit of the repressor. […]

A wild-type trihybrid soybean plant is crossed to a pure-breeding soybean plant with the recessive phenotypes pale leaf l, oval seed (r), and short height (t). The results of the three-point test cross are shown in the table. Traits not listed are wild type. Phenotype NumberPale 648Pale, oval 64Pale, short […]