A45-year-old female with a past medical history of rheumatoid arthritis presents to the emergency department with right calf pain and swelling of sudden onset. she denies fever, chills, dyspnea, chest pain, or history of trauma to the leg. she has smoked a half pack of cigarettes daily for 20 years. her only medicine is methotrexate for her rheumatoid arthritis. on physical examination, her temperatureis 37.0°c (98.6.f), pulse is 70/min, blood pressure is 140/80 mmhg, and respirations are 14/min. her bmi is 30 kg/m2. examination of the right calf reveals mild redness, warmth and tenderness. whichof the following is the most appropriate next step in the management of this patient? a. initiate warfarin therapyb. initiate heparin therapyc. perform compression ultrasonographyd. perform contrast venographye. obtain blood cultures and start antibiotics

answer; a male inherits only one allele of the x-linked gene controlling hair color;

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.