More cards in this set

why does sexual reproduction result in variation?

explain why offspring produced by asexual reproduction are genetically identical.

what is meant by the term 'genotype'?

what is meant by a 'heterozygous' individual?

how old is the earth?

when do we believe life on earth began?

how are fossils dated?

why are there no fossils of early life forms?

how might a new competitor cause the extinction of a species?

suggest two ways that people can cause the extinction of some species.