eniendo en cuenta que los seres humanos nos encontramos en la cúspide de la cadena alimenticia y que por lo general somos omnívoros. Supongamos que usted almuerza una porción de arroz, dos papas saladas, una porción de ensalada y un asado mixto de carnes de cerdo, res y culebra. Establezca en que nivel de la cadena trófica se encuentra su alimento y en cual usted al consumirlo. (Por ejemplo el arroz se encuentra en el primer nivel trófico ya que es productor y adquiere su energía directamente del suelo y del sol).

In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.

In german cockroaches, curved wing (cv) is recessive to normal wing (cv+). bill, who is raising cockroaches in his dorm room, finds that the frequency of the gene for curved wings in his cockroach population is 0.6. in his friend joe’s apartment, the frequency of the gene for curved wings is 0.2. one day joe visits bill in his dorm room, and several cockroaches jump out of joe’s hair and join the population in bill’s room. bill estimates that, now, 10% of the cockroaches in his dorm room are individual roaches that jumped out of joe’s hair. what is the new frequency of curved wings among cockroaches in bill’s room? 0.69 0.4 0.5 0.31 0.20

Pulmonary arteries carry highly oxygenated blood. true or false?