Define evolution precisely and explain how heritable variation, inheritance and selection produce change in populations over generations.
Species are groups of organisms that can potentially interbreed to produce fertile offspring.
Outline how new traits in a species can develop over time.
a. mutations generate variation/generate new traits;
b. mutations are changes to base/nucleotide sequence (of DNA/genes);
c. new alleles are formed by mutation;
d. meiosis/sexual reproduction generates new combinations of genes/alleles;
e. natural selection;
f. better adapted (individuals) have higher chance of survival;
g. better adapted (individuals) (tend to) produce more offspring/more likely to reach reproductive age;
h. heritability / traits/genes passed on (to offspring) / offspring inherit genes/alleles of their parents;
i. directional selection causes change in traits;
j. environmental change/environmental pressure causes selection of advantageous mutations/new traits;
k. antibiotic resistance/melanism in moths/other evidence-based example of development of new traits;
I. development of new traits over time is evolution;
Marking guidance:
Reject examples of speciation for mpk.
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max