M5: Importance of Accuracy during DNA Replication Flashcards
(6 cards)
1
Q
why is accurate dna replication important?
A
- heriditary material must be transmitted accuaratley from one cell to another
- gene expression
2
Q
types of errors in replication?
A
- spontaneous > natural errors that arise at random
- mutagenic mutations > errors arise due to exposure of cell to environmental factors
3
Q
what is continuity of a species?
A
ongoing survival of a species as a result of characteristics being passed from the parents of an offspring in a continuous lineage
4
Q
what is genetic stability?
A
passing on consistiently accurate information from ancestors to currently living species - important for survival of individual
5
Q
what is genetic variation?
A
mutation results in genetic variation, important for evolution of a species
6
Q
what must occur for continuity of a species?
A
- consistent cell replication prior to division
- orderly distribution of chromosomes
- same species breed successfully
- embryo survival
- natural selection
- genetic variation
