Question

homework - meiosis
the dna fingerprints created by gel electrophoresis for a child and the parents show that some of the childs bands match the father, and some of the bands match the mother. what explains why some bands match the father and some match the mother?
the child receives all the dna from both parents during fertilization.
the child inherits the best genes from each parent during fertilization.
half of the childs chromosomes are inherited from the father and half are inherited from the mother.
half of the childs chromosomes are inherited from the parents, and half are generated during meiosis.

Explanation:

During fertilization, a child inherits half of their chromosomes from the father and half from the mother. This is why some bands in the DNA fingerprint match the father and some match the mother. A child does not receive all DNA from both parents (it's a combination of half - sets), there's no 'best genes' selection in the way described, and no new chromosomes are generated during meiosis for inheritance in the sense described in the incorrect options.

Answer:

Half of the child's chromosomes are inherited from the father and half are inherited from the mother.