The activation energy of a reaction going on its own is 20 kj. if the reaction was treated with a catalyst, which would most likely represent the amount of energy needed to start a reaction?
15 kj
20 kj
25 kj
30 kj

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a.the offspring are more likely to have freckles. b.the offspring are more likely to have no freckles. c.the likelihood of the offspring having freckles and not having freckles is the same. d.the likelihood of the offspring having freckles and not having freckles cannot be determined.