The laryngeal nerve is 15 feet long in giraffes because

A) a giraffe's throat is located far away from its brain.
B) this nerve connects to the spinal cord.
C) the nerve is modified from an ancestor that did not have a neck.
D) this nerve is a vestigial organ.


Answer: C

Biology & Microbiology

You might also like to view...

Explain why geneticists believe that almost all chromosomally abnormal embryos and fetuses are eliminated as pregnancy progresses

What will be an ideal response?

Biology & Microbiology

A microbiologist studying the human microbiome is interested in how a particular bacterial species may impact water absorption in the large intestine. Which of the following models is appropriate for this investigation?

A. A normal mouse colonized with enteric microbiota found in the human colon. B. A germfree mouse inoculated with human microbiota shortly after birth. C. A human volunteer who is a carrier of that particular bacterial species. D. A germfree mouse raised in a sterile environment.

Biology & Microbiology

What type of allele is often detected as a distortion in segregation ratios, where one class of expected progeny is missing?

A) dominant negative allele B) temperature-sensitive allele C) lethal allele D) partial dominance E) incomplete penetrance

Biology & Microbiology

Molecules whose concentration and position in an embryo determine some aspect of development are called ________

Fill in the blank(s) with correct word

Biology & Microbiology