Mutation are two types somatic and germ cell mutation...as there is mutation in germ cell it will alter the normal behavior and produce variation !
random fertilization also causes variation as different setup of genes meets with another different...so chances of variation increases !
and third crossing over is in meiosis when chiasmata forms....so in this two homologous chromosome attach to each other and on separation ... some part exchange so leads to variation !
Answer:
D
Explanation:
The nucleus is what stores a lot of "data" so to speak or genetic material due to being the command post of the cell.
Stem cells are what allow planaria to grow and regenerate as the stem cells can change into any of the cells that make up the planaria.
Hydro means water. which means the adding of water; it is digestion. it is the opposite process of dehydration synthesis which is removing water. synthesis hear means small to large so opposite processes. :)
Answer:
red blood cells (RBCs) misfolding and convert in sickle shapevfrom the donut with out hole shape.
