The sphincter is a of muscle at an opening.
a. strip
b. pack
c. ring
d. band
e. network

Draw the structure of dna nucleotide with adenine as nitrogenous base

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b. organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.