A. flower color is red; AA. flower color is blue
An example of parallel choices in a key is, A. flower color is red; AA. flower color is blue.
-Dichotomous key allow the user to determine the identity of items using a sequence of alternative choices. Dichotomous keys always give two, mutually exclusive choices in parallel statements. The pair of statements is referred to as a couplet and each 1/2 of a couplet is a lead. At each couplet of a dichotomous key the user is presented with two choices about a specific character present in the group of organisms, a specific character state is described for each lead.
-Sometimes the characters are quantitative (i.e., measurements) and sometimes the characters are qualitative (e.g., texture). As the user makes a choice about a particular characteristic of an organism s/he is led to a new branch or couplet of the key. Each couplet provides characteristics that become progressively more specific until the final step is reached and identification is made.
format change of dna.
answer'(basidium)the spore--bearing structure of a basidiomycete is called a basidiocarp; ///
a. flower color is red; aa. flower color is blue<...