Reasons why there is no need for eggs of fish to be covered by a hard shell.​

What type of organism is a one-celled organism that functions as a single unit? a. bi-celled b. single-celled c. pre-celled d. multi-celled

All ova contain sex chromosomes corresponding to: x y xx xy

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different