Question
How is a dichotomous key used?
The organism is compared to paired pictures of organisms until a match is found in the key.
The organism’s DNA is sequenced and compared to the DNA sequences that are listed in the dichotomous key.
Observable characteristics of the organism are checked through a sequence of two-part steps until an identification is listed in the key.
Observable characteristics of the organism are listed in a group and compared to different groups of observable characteristics listed in the key.
The organism is compared to paired pictures of organisms until a match is found in the key.
The organism’s DNA is sequenced and compared to the DNA sequences that are listed in the dichotomous key.
Observable characteristics of the organism are checked through a sequence of two-part steps until an identification is listed in the key.
Observable characteristics of the organism are listed in a group and compared to different groups of observable characteristics listed in the key.
Answers
GPT-4o mini
A dichotomous key is used primarily through the method described in the third option: **Observable characteristics of the organism are checked through a sequence of two-part steps until an identification is listed in the key.**
In a dichotomous key, users follow a series of choices between two contrasting statements about the characteristics of the organism. Each choice directs the user to the next step or to a conclusion that identifies the organism. This method allows for systematic identification by focusing on one characteristic at a time, leading to an eventual identification based on observable traits.
In a dichotomous key, users follow a series of choices between two contrasting statements about the characteristics of the organism. Each choice directs the user to the next step or to a conclusion that identifies the organism. This method allows for systematic identification by focusing on one characteristic at a time, leading to an eventual identification based on observable traits.