Mario hears his brother open the door, so he turns toward the door to say hello. which best describes the signals moving through mario’s nervous system to make him react and turn around? a)the sensory nervous system sends a signal to the central nervous system, then the brain sends a signal to the somatic nervous system. b)the autonomic nervous system sends a signal to the central nervous system, then the brain sends a signal to the sensory nervous system. c)the sensory nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the autonomic nervous system. d)the autonomic nervous system sends a signal to the peripheral nervous system, then the brain sends a signal to the somatic nervous system.

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

Human genes only differ by less than percent. a. 1 b. 6 c. 11 d. 16