The erythrocyte count increases after a while when an individual goes from a low to a high altitude because: the temperature is lower at higher altitudes. the basal metabolic rate is higher at high altitudes. the concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes. the concentration of oxygen and/or total atmospheric pressure is lower at high altitudes.

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.