To examine how a reward influences a desired behavior, a mother first counts the number of times her son makes his bed over a two-week period. for the next two weeks, she gives him a reward every time he makes his bed. following this period, she stops rewarding him and again counts the number of times he makes his bed. this procedure would be an example of a(n) design.

a. pretest-posttest
b. baseline treatment
c. control series
d. aba

Report all segments of identity by descent longer than 20 polymorphisms between pairs of individuals in the following cohort of 15 individuals across 49 polymorphisms: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 numeric input 2 points possible (graded) you have 2 attempts to complete the assignment below. for example if the sequence is "bcd", which occurs in "abcdef" , the starting point would be 2 (b), and the finishing point would be 4(d). individuals 7,10 between positions