Why does germ (sex) cells undergo meiosis and somatic(body) cells don't?

The finches on the galapagos island were similar in form except for variations of their beaks. darwin observed that these variations were useful for: attracting a mate defending territory building nests gathering food

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele