Cell Cycle
What is the function of phase S in the cell cycle?
synthesis or replication of DNA
Which organism is most likely to survive ?
A. The best adapted
B. The fastest
C. The strongest
A. The best adapted
Volcanic explosion
Primary succession
What is the result of meiosis ?
Four unidentical gametes
How many check points are there in the cell cycle
3
Why is natural selection so important for organisms survival?
because it allows them to be more adapted to there environment and it increases there chances of survival.
Wild fire
Secondary succession
What does meiosis create?
Gametes
What is the purpose of phase G1?
Prevents cells from replicating damaged DNA
The most genetic variation a population has, the more likely it is for some individuals to?
Survive
What is the difference between primary and secondary succession?
Secondary succession had soil already present while primary started from bare rock .
The structure that contains the DNA is called?
Chromosomes
Where does the cell spend most of its time during the cell cycle?
Interphase
The meaning of evolution...
The change over time in a population.
What starts growing during the first stages of primary succession?
Lichen and mosses
How many chromosomes do human gametes have?
23
What are the phases ofc the cell cycle called?
Gap 1 (G1), synthesis (S), Gap 2 (G2), and mitosis (M),
Any variation that can help a species survive in a given environment is called?
Adaptation
Why does primary succession take longer then secondary succession?
Because primary does not have soil present while secondary already has soil.
Crossing over allows what to happen?
Genetic variation