Scientists have successfully cloned animals, including large mammals such as sheep. which statement
provides the most likely reason that a human has not yet been cloned?
(1) humans have dna that is structurally very different from other mammals.
(2) cloning can only be performed on animals that normally reproduce asexually.
(3) human genes are made of too many different types of simple sugars.
(4) some people consider human genetic experiments unethical.

The production of cells during mitosis into specialized function is recombination or differentiation

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

26 a medida que cambia el clima, ¿qué tipo de reproducción más probablemente de a una especie mayores posibilidades de supervivencia?