Which bone in the chicken is the only bone that is not directly attached to any other bones?
A) the sternum, or breastbone
B) the shank, or keel
C) the furcula or, wishbone

Ectocarpene is a volatile, sperm cell-attracting material released by the eggs of the seaweed ectocarpus siliculosus. its constitution is all the double bonds are cis, and the absolute configuration of the chirality center is s. draw a stereochemically accurate representation of ectocarpene.

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome