The X chromosome is A. larger than the Y chromosome B. smaller than the Ythe same size as the Y chromosome chromosome C. smaller than the Y chromosome D. the same size as the Y chromosome

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

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.

if you know your abc's you should be able to get your answer or just use google