In 1814, a few dozen british colonists founded a settlement on tristan da cunha, which is a group of small islands in the atlantic ocean. one of these individuals carried a recessive allele for retinitis pigmentosa, a retinal degeneration disorder. by the 1960s, the frequency of this allele was ten times higher on tristan da cunha than in the original population. this is an example of which genetic effect?

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the

The answer is d. when it begins to fall back to the child's hand