Unlike identical twins, fraternal twins

a. are always the same sex

b. are produced from two identical embryos

c. result from two eggs fertilized by two different sperms.

d. is wrong

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

What is true of sea slugs in these orders

Asegment of dna that codes for rna and a protein is a