Biology, 04.03.2021 20:10 StitchBeach
Long necks in giraffes are an example of a trait that has been naturally selected over the evolutionary history of an organism. Which of the following best explains what must have happened for this selection to occur?
In each generation of giraffes, long-necked giraffes mated only with short-necked giraffes.
In each generation of giraffes, all the neck lengths were the same, and all the long-necked generations survived.
In each generation of giraffes, there was an abundance of resources available for each individual.
In each generation of giraffes, there was variation in neck lengths, and scarcity of resources meant that not all giraffes survived.
Answers: 1
Other questions on the subject: Biology
Biology, 22.06.2019 10:00, alexwlodko
Based on the observation that only male crickets produce a song, you hypothesize that a male's song is a form of communication to potential mates. you set up a simple experiment to test this hypothesis. in the laboratory, you place a male snowy tree cricket in enclosure a, which is adjacent to enclosureb. in enclosure b, you place other insects, one at a time, and observe their responses to the male's song. the enclosures are designed so that the two insects being tested cannot see or smell each other, but sound is transmitted from enclosure a to enclosureb.
Answers: 1
Biology, 22.06.2019 23:30, tatilynnsoto17
What theory states that not only climate but several other factors determine the characteristics of the climax community
Answers: 2
You know the right answer?
Long necks in giraffes are an example of a trait that has been naturally selected over the evolution...
Questions in other subjects:
English, 04.04.2020 14:36
