What function does a clitellum serve?
a. anchoring an animal to its substrate
b. digestion
c. cushions organs
d. glues two organisms together for sperm
exchange
e. keeps blood from clotting
D
You might also like to view...
Where do autotrophic plants obtain their food?
a. From symbiotic bacteria that live on or around their roots b. By trapping insects c. They make their own. d. From the soil
Why are scientists separating the protists into several different groups?
What will be an ideal response?
If wire hair (W) is dominant to smooth hair (w), and you find a wire-haired puppy, how would you determine its
genotype by a genetic breeding experiment? What will be an ideal response?
Genes can be duplicated when a processed messenger RNA, from which introns have been spliced out, is reverse-transcribed to form a double-stranded DNA segment that is reintegrated into the main chromosome
What is the name for this process that may form nonfunctional pseudogenes?