Ais a gas-filled sac that regulates buoyancy and depth.

my choices are:
gill pouch

swim bladder

cephalothorax

none of the above

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

The basic types of tissue in the human body are

Which statement describes the punctuated equilibrium theory?