All of the following are true about karyotypes EXCEPT
(A) they show pictures of chromosomes in metaphase
(B) they represent all of the chromosomes in a gamete or sex cell
(C) they represent all of the chromosomes in somatic or body cell such as skin or a muscle cell
(D)
they can show chromosome number abnormalities for an individual such as Turner's syndrome

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !