2.2 Continuity of Species Flashcards
Why is DNA replication important for continuity of species
By copying the genetic material ensures that information important for life is transferred down through generations
is DNA replication did not occur, during cell division DNA information would halve and the resulting cells would die from inadequate amounts of genetic material
DNA directs all processes in a cell
Reproduction of cell is dependant on DNA replication
Why is Mitosis important for continuity of species
Mitosis is essential for the development and growth of organisms
mitosis allows for a multicellular body
old cells are replaced
Allows us to develop to maturity when we can pass on genetic information to offspring
some organisms reproduce asexually therefore mitosis in required
Why is Meiosis important for continuity of species
Gametes are the end product of meiosis
combination of gametes produces new organisms
process of crossing over, independent assortment and random segregation promote variation
Genetic diversity - essential factors for survival and evolution
