Index
Gap-fill exercise
Fill in all the gaps, then press "Check Answers" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints or clues!
Evidence for
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
is provided by
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
and from analysis of similarities and differences in
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
of organisms.
The combined effect of
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
, environmental
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
and natural
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
can produce new
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
.
Mutated
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
in
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
cells can be passed on to
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
and may occasionally produce new
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
.
The first living things developed from
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
that could
changes
characteristics
copy
DNA
evolution
fossils
genes
molecules
mutations
offspring
selection
sex
species
[?]
themselves.
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Index