DNA fingerprinting can be used in paternity tests, because for the most part do not undergo recombination, and are passed from father to son unchanged.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

i guess because love can be toxic ‍♂️