Results of investigation: karyotype of ella 46,XX, rec(21)dup(21q)inv(21)(p12q21.1); karyotype of father 46,XY; karyotype of mother 46,XX, inv(21)(p12q21.1)[19]:46,XX[11]. Ella’s maternal grandparents had normal karyotype. Make a step-by-step diagram of the mechanism of occurrence of such a karyotype in Ella

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?