Which of the following gases has no effect in the blood until hyperbaric conditions occur (as in SCUBA diving when one stays down too long at great depths), when a condition called ""rapture of the deep"" occurs, producing a narcotic-like effect, as this gas interacts with other blood chemicals?

a. Nitrogen
b. Oxygen
c. Carbon monoxide
d. Carbon dioxide
e. Helium

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.