Which of these is an example of selective breeding?

A: Cutting a stem from a plant so that a new plant grows from the stem
B: Taking a skin cell from a sheep and making an exact clone of the sheep
C: Replacing DNA of a plant with DNA that allows the plant to grow in little water
D: Selecting two horses and having them mate in order to produce stronger offspring

Ais a group of individuals of the same that exist together in the same place at the same time

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.

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species