natural selection

Question 1

what does the theory of evolution suggest

Answer 1

organisms evolve over many years as a result of natural selection
organisms that are best suited to their environment are most likely to survive and reproduce, passing advantageous characteristics to their offspring
advantageous characteristics passed on in genes by DNA

Question 2

what affect the organisms chance of survival

Answer 2

exposed to selection pressures

Question 3

process of natural selection

Answer 3

genetic variation occurs within a species, new alleles arise by mutation
organisms whose characteristics are best adapted to selection pressure such as predation, competition or disease will have an increased chance of survival and reproductive success, less well-adapted will die/fail to reproduce
successful organisms will pass on their alleles with the advantageous characteristics to their offspring
process repeated, the frequency of allele that codes for this characteristic increase

Question 4

conditions for evolution

Answer 4

variation
heredity
means of selection