1. Why
can
only females be carriers of sex-linked disorders?

Dna is colied into chromosomes in a cell

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

There are only about 250,000 known fossil species. true or false