Which is the best definition of genetic engineering? variation in an organism's traits by natural variation of its dna modification of an organism's characteristics by maintaining its dna full removal of an organism's characteristics by altering its dna changing an organism's characteristics by manipulating its dna

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition. b) one-fourth of the daughters of an affected man would have this condition. c) one-half of the daughters of an affected father and a carrier mother could have this condition. d) only if a woman is xxx could she have this condition.

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

Science which of the following is an example of a cyclic behavior that is seasonal? i think the answer is d, i just need to double check : ). a. running from predators. b. searching for water. c. hunting at night. d. migrating for warmth. ***